Yes and No
Sic et Non is a scholastic compilation in which Peter Abelard gathers 158 theological questions and juxtaposes contradictory authorities—principally from the Bible and the Church Fathers—answering each question both “yes” (sic) and “no” (non). The work begins with a methodological prologue outlining rules for interpreting and reconciling apparent contradictions. Abelard then organizes the disputed questions under major theological headings—such as the nature of God, the Trinity, creation, Christ, grace, faith, and ethics—without providing his own explicit solutions. The work’s aim is to train students in critical dialectical analysis, demonstrating that authoritative texts must be interpreted with attention to context, language, and logical coherence rather than accepted uncritically.
At a Glance
- Author
- Peter Abelard (Petrus Abaelardus)
- Composed
- c. 1121–1122 (with later minor revisions)
- Language
- Latin
- Status
- copies only
- •Apparent contradictions among authoritative texts are pedagogically useful, for they provoke inquiry and lead to deeper understanding of truth.
- •No human authority (apart from Scripture rightly interpreted) is infallible; the writings of the Fathers must be weighed, compared, and critically examined.
- •Many contradictions dissolve when one considers differences of wording, context, intention, or the multiple senses of scriptural and theological language.
- •Faith and reason are not opposed; rational dialectic is a legitimate and even necessary tool for clarifying and defending the truths of Christian doctrine.
- •Ambiguities in language and the figurative or accommodated character of much theological discourse require careful logical and grammatical analysis before doctrinal conclusions are drawn.
Sic et Non is one of the foundational texts of medieval scholasticism and a crucial step in the institutionalization of the quaestio disputata method in theology. By deliberately presenting unresolved contradictions, Abelard shifted theological study from compilation to critical analysis, paving the way for the great Summae and Sentences-commentaries of the thirteenth century. The work exemplifies the emerging confidence that logical method can clarify and systematize Christian doctrine. It also influenced the way later scholastics structured their works—beginning with objections, then responses, then solutions—although Abelard leaves the solutions implicit. In the history of philosophy, Sic et Non is significant as an early and explicit defense of doubt and rational inquiry within a religious framework.
1. Introduction
Yes and No (Sic et Non) is a Latin theological and philosophical treatise compiled by Peter Abelard in the early 12th century. It is distinctive for its method rather than for any systematic doctrine: Abelard assembles 158 formally posed questions (quaestiones) and places on each side an array of authoritative statements answering “yes” (sic) and “no” (non), without explicitly resolving the resulting tensions.
The work opens with a substantial Prologue in which Abelard explains why he gathers apparent contradictions and outlines rules for how such clashes of authorities (auctoritates) might be reconciled. The main body is then arranged by major doctrinal themes—God and the Trinity, creation, Christ, grace and free will, faith and the sacraments, and Christian ethics—each treated through opposing patristic and scriptural testimonies.
Modern interpreters generally agree that Sic et Non served as a teaching tool for Abelard’s students in Paris. Rather than offering a finished synthesis, it functions as an invitation to dialectical inquiry, presupposing that readers will apply the Prologue’s principles to work toward concord (concordia) among seemingly discordant voices. Because Abelard rarely states his own solutions within this text, scholars debate how directly it reflects his personal theology.
The work has been regarded as an early landmark of scholastic method. By foregrounding doubt (dubitatio) and rigorous comparison of texts, it helped shift Latin theology from mere compilation toward structured debate and analysis. At the same time, contemporaries and later critics have viewed its unresolved contradictions with suspicion, seeing in them a risk of confusion or skepticism.
This entry focuses on Sic et Non as a philosophical-theological artifact: its historical setting, sources, structure, method, main thematic clusters, and subsequent reception, without attempting to adjudicate the doctrinal issues it raises.
2. Historical and Intellectual Context
2.1 Twelfth-Century Renaissance
Síc et Non emerged during what historians often call the “twelfth‑century renaissance”, a period marked by institutional growth of schools, renewed interest in logic, and expanding access to patristic and classical texts. In northern France, cathedral schools—especially in Paris, Laon, and Chartres—were becoming centers of organized higher learning, foreshadowing the later university.
In theology, earlier monastic exegesis and homiletic compilation coexisted with a newer, more analytical style cultivated in urban schools. Theological masters increasingly used questions and structured disputation, drawing on revived study of Aristotle’s logical writings (then known largely through the logica vetus).
2.2 Theological Traditions and Tensions
Abelard’s project intersects with two broad trends:
| Monastic Culture | Scholastic School Culture |
|---|---|
| Emphasis on lectio (meditative reading), moral edification, and spiritual unity of doctrine | Emphasis on quaestio, analysis of problems, and logical clarification |
| Suspicion of excessive dialectic in matters of faith | Interest in applying dialectic to theology |
Figures such as Anselm of Laon and William of Champeaux—with whom Abelard studied or competed—represent earlier or alternative approaches to organizing theological teaching around sentences of the Fathers, but often with more overt harmonization and fewer unresolved conflicts.
2.3 Intellectual Resources
The logical background of Sic et Non includes:
- Boethius’s Latin translations and commentaries on Aristotle’s Categories, On Interpretation, and Porphyry’s Isagoge.
- A growing practice of dialectical debate (disputatio) in the schools, where masters posed and responded to objections.
Abelard’s use of these resources reflects an emerging conviction—shared by many but contested by others—that reason (ratio) could and should be used to clarify revealed truth.
2.4 Ecclesiastical and Political Setting
Abelard’s career unfolded amidst debates over orthodoxy and authority, including local synods and, for him personally, the Council of Soissons (1121). Some historians suggest that the climate of scrutiny around novel theological formulations shaped Abelard’s choice to frame Sic et Non as a compilation of authorities needing interpretation, rather than as a dogmatic treatise.
The text thus stands at a crossroads: between monastic and scholastic styles, between reverence for tradition and critical analysis, and between emerging academic institutions and established ecclesiastical oversight.
3. Author and Composition of Sic et Non
3.1 Peter Abelard
Peter Abelard (c. 1079–1142) was a Breton cleric and master of dialectic who taught in several Parisian schools. Known for both his logical skill and personal controversies, he produced works on logic, theology, and ethics. Sic et Non belongs to his period as a highly sought-after teacher in Paris, after his initial formation under Anselm of Laon and William of Champeaux.
Abelard’s broader oeuvre includes logical treatises (e.g., Dialectica), theological works (e.g., Theologia “Summi Boni”), and an influential ethical text (Scito te ipsum). Scholars often read Sic et Non in connection with these writings to infer his views on faith and reason, even though the work itself is non-doctrinal in form.
3.2 Date and Circumstances of Composition
Most researchers place the composition of Sic et Non around 1121–1122, shortly after Abelard’s condemnation at the Council of Soissons. The reasoning for this dating includes:
- Its reliance on an already-developed teaching career and circle of students;
- Its affinity with Abelard’s mature logical method;
- The absence of references to later episodes in his life.
It appears to have been produced for internal use in the school, rather than as a public, formally dedicated book. Surviving manuscripts bear no authorial preface to a patron, and the text’s raw, question-centered structure resembles lecture material.
3.3 Process of Compilation
Scholars generally view Sic et Non as the result of selective excerpting from Scripture and the Fathers, arranged under 158 questions. Abelard’s method of selection remains debated:
- One view holds that he simply collected passages that students or other readers might already know and experience as conflicting.
- Another suggests that he sometimes deliberately juxtaposed remote passages to sharpen tensions and stimulate debate.
There is some evidence of later minor revisions, such as rearrangements of questions or adjustments in citations, but no consensus on how many stages of redaction the work underwent.
3.4 Later Transmission
During Abelard’s lifetime, Sic et Non circulated in manuscript copies among students and other masters. Its first printed edition did not appear until 1616 (Jean de Gagny). Modern critical study relies on the edition by Blanche B. Boyer and Richard McKeon (1976–1977), which reconstructs the text from multiple manuscripts and situates it within Abelard’s teaching career.
4. Sources and Authorities Used by Abelard
4.1 Types of Authorities
Abelard’s auctoritates in Sic et Non fall into several main categories:
| Type of Source | Examples | Typical Role |
|---|---|---|
| Scripture | Old and New Testaments (Vulgate) | Primary normative texts, often on both sides of a question |
| Latin Fathers | Augustine, Jerome, Ambrose, Gregory the Great | Principal patristic witnesses for doctrinal positions |
| Greek Fathers (in Latin translation) | John Chrysostom, Athanasius | Supplementary patristic voices, often via florilegia |
| Ecclesiastical texts | Canons, conciliar decrees (selectively) | Support for disciplinary or doctrinal claims |
Abelard’s selections reflect what was available in 12th‑century northern France, mediated through collections of patristic excerpts and standard biblical commentaries.
4.2 Dominance of Augustine
Augustine of Hippo is by far the most frequently cited Father. Proponents of Abelard’s method argue that this reflects Augustine’s centrality in the Latin West and his own nuanced, sometimes internally diverse corpus. Critics sometimes suggest that Abelard exploits Augustine’s complexity to magnify apparent contradictions.
Abelard occasionally quotes Augustine’s warnings about fallibility of non-scriptural writers to justify critical examination of all Fathers, including Augustine himself.
4.3 Other Patristic Voices
The repertoire also includes:
- Jerome, particularly on biblical interpretation and moral questions;
- Ambrose, especially on Trinitarian and Christological issues;
- Gregory the Great, on pastoral and moral themes;
- Various other Fathers whose works circulated in Latin florilegia (e.g., pseudo-Augustinian or anonymous texts sometimes attributed to major authors in medieval tradition).
Modern scholarship notes that some attributions in Sic et Non correspond to medieval ascription practices, not necessarily to modern critical authorship.
4.4 Use of Scripture
Abelard cites Scripture both literally and in ways that later exegesis would consider contextually limited. Supporters see this as aligning with contemporary methods of proof-texting; others contend that some biblical passages are abstracted from their narrative or argumentative setting to heighten difficulty.
4.5 Absence and Selectivity
Not all available sources are used. For instance, some regional councils or lesser-known Fathers are absent or underrepresented. Interpretations differ:
- One view sees this as pragmatic selectivity focusing on widely recognized authorities.
- Another regards it as a form of curation, emphasizing texts that most effectively pose problems for dialectical resolution.
Overall, the source base of Sic et Non illustrates a canon of Western Christian authorities as they were perceived in the early scholastic milieu.
5. Structure and Organization of the Questions
5.1 Overall Layout
After the Prologue, Sic et Non presents 158 questions. These are grouped loosely into thematic clusters that roughly correspond to a progression from God to creation, Christ, salvation, the Church, and ethics:
| Part (modern classification) | Thematic Focus | Approx. Question Range |
|---|---|---|
| I | God, Trinity, divine attributes | early questions |
| II | Creation, angels, humanity | following questions |
| III | Christology, Incarnation | middle sections |
| IV | Grace, free will, sin | subsequent questions |
| V | Faith, sacraments, Church | later questions |
| VI | Ethics, law, Christian life | final questions |
These “parts” are interpretive groupings used by modern editors; the medieval manuscripts do not always mark clear book divisions.
5.2 Form of Each Quaestio
Each quaestio typically follows a consistent internal pattern:
- A succinct title‑question, often beginning with Utrum (“whether …”).
- A sequence of “yes” authorities (sic), giving reasons or textual support for an affirmative answer.
- A sequence of “no” authorities (non), supporting the contrary.
Abelard does not, in this work, add an explicit determinatio (final answer) or intermediate analysis between the two sides. The structure is thus intentionally open-ended.
5.3 Ordering Principles
Scholars have proposed various principles behind the order of questions:
- Doctrinal progression: from foundational topics (God, Trinity) to derivative ones (ethics).
- Pedagogical complexity: possibly moving from more straightforward scriptural issues to intricate patristic debates.
- Traditional loci: echoing established theological headings (e.g., God, creation, redemption).
There is no consensus that Abelard followed a single systematic scheme; many think he combined several ordering considerations while accommodating practical constraints such as the availability of excerpts.
5.4 Relationship to Other Collections
Compared with contemporary sentence-collections, Sic et Non is unusual in:
- Emphasizing conflict rather than harmony;
- Avoiding narrative or homiletic framing;
- Providing no integrated commentary between citations.
Some historians suggest that this stark organization magnifies the need for the Prologue’s interpretive rules, making the work function as a set of exercises rather than a finished doctrinal manual.
6. The Prologue and Methodological Principles
6.1 Purpose of the Prologue
The Prologue to Sic et Non is programmatic. Abelard explains why he has gathered apparently contradictory authorities and how they should be approached. He affirms the pedagogical value of doubt (dubitatio) and justifies the use of dialectic in theology.
A frequently cited passage states:
“By doubting we come to inquiry; by inquiry we perceive the truth.”
— attributed to Abelard, Sic et Non, Prologue
This motto frames the work as a training in inquiry rather than an attempt to destabilize doctrine.
6.2 Rules for Reconciling Authorities
The Prologue lists several principles for resolving apparent contradictions. While the exact enumeration varies by edition, they include:
- Attention to textual variants: inconsistencies may stem from faulty transmission or different manuscripts.
- Distinguishing literal and figurative (figura) meanings: some statements are metaphorical or accommodated.
- Considering context and intention (intentio auctoris): an author might speak to different audiences or purposes.
- Recognizing development in an author’s thought: an early work may differ from a later, more mature position.
- Noting ambiguity (ambiguitas): the same term can carry multiple senses in Latin or in translation from Greek.
- Differentiating between absolute and qualified claims (e.g., “God can do all things” versus “God cannot lie,” where “cannot” may be understood as moral impossibility).
Proponents see these as an early, systematic statement of hermeneutical and logical norms within medieval theology.
6.3 Authority and Fallibility
The Prologue also reflects on the status of authorities:
- Scripture is treated as normatively true but in need of careful interpretation.
- The Fathers, though venerable, are said to be capable of error; Abelard cites patristic acknowledgments that later readers may correct or refine earlier understandings.
Some contemporaries interpreted these remarks as diminishing patristic authority; others see them as consistent with an Augustinian tradition that subordinates all human writings to Scripture.
6.4 Function for the Reader
The Prologue implicitly instructs students to:
- Identify the type of conflict in a question (verbal, contextual, doctrinal).
- Apply one or more of the listed rules to propose a concord (concordia).
- Formulate their own resolution, even though Abelard does not model this step explicitly in the text.
Modern interpreters differ over whether the Prologue should be read mainly as a practical manual for classroom use or as a broader philosophical statement about the relationship between faith and reason.
7. Central Theological Topics: God, Trinity, and Creation
7.1 Questions about God and Divine Attributes
The early portion of Sic et Non is devoted to issues concerning God’s existence, nature, and attributes. Typical questions include whether:
- God can be seen by human beings in this life;
- God can change or “repent” as some biblical passages suggest;
- God can do all things, and in what sense divine omnipotence may admit of “inabilities” (e.g., inability to lie or sin);
- God’s foreknowledge is compatible with human freedom.
Authorities are cited on both sides of these questions, creating tensions between passages that stress divine immutability and simplicity and others that depict God in more anthropomorphic or responsive terms.
7.2 The Trinity
A substantial set of questions concerns the Trinity (Trinitas). Abelard gathers texts that appear to diverge on:
- How the persons (Father, Son, Holy Spirit) are distinguished;
- Whether the Son is in some sense less than the Father, according to certain scriptural passages;
- The language of processions and relations within the Godhead.
Some patristic texts emphasize strict unity to the point of almost effacing personal distinctions; others employ language that might suggest a hierarchy. Sic et Non places such statements side by side without resolution, encouraging readers to work toward a formulation that preserves both unity and threefoldness.
7.3 Creation and the World
The transition from God to the world introduces questions on creation:
- Whether the world is eternal or created in time;
- Whether God created everything at once or in temporal succession;
- The relation between God’s will and the existence of creatures.
Abelard juxtaposes authorities who interpret certain biblical phrases as implying an eternal world with those who insist on a temporal beginning. He also raises issues about whether God could have created a different or better world, by collating sources that stress divine freedom with others that highlight divine wisdom and fittingness.
7.4 Angels and the Order of Creation
In connection with creation, some early questions address angels and the hierarchy of beings:
- Whether all angels were created equal;
- Whether they were created before the corporeal world;
- How angelic knowledge and will relate to God.
These topics already begin to anticipate later questions about human beings and sin, but in this section they function primarily to explore the structure of created reality in relation to the divine.
Overall, the early questions establish the basic metaphysical and doctrinal framework within which later Christological and soteriological issues are considered.
8. Christology, Grace, and Free Will
8.1 Christological Questions
A central block of Sic et Non is devoted to Christology and the Incarnation. Questions include, among others, whether:
- Christ could sin, or whether his human nature made sinning possible in principle;
- Christ possessed ignorance or fear, as suggested by certain Gospel passages;
- Christ is one person in two natures, and how properties of each nature are predicated of the person;
- Christ’s knowledge is limited as man or comprehensive as God, and how these aspects coexist.
Abelard draws patristic statements stressing Christ’s true humanity (with its affective and cognitive limitations) alongside texts emphasizing his perfect divinity and impeccability, creating tensions that require careful distinction of natures, persons, and operations.
8.2 Grace and Human Freedom
A further group of questions concerns grace (gratia) and free will (liberum arbitrium). These examine whether:
- Human beings can do any good without grace;
- All that happens is in some sense willed by God;
- Grace is resistible or irresistible;
- Good actions of non-believers possess true merit.
Abelard cites Augustine and other Fathers both asserting the necessity of grace for any truly good act and, in other places, acknowledging forms of natural virtue and human initiative. Readers are asked to reconcile affirmations of divine causality with statements that appear to secure genuine human responsibility.
8.3 Sin, Guilt, and Original Sin
Related questions address sin and culpability:
- How original sin (peccatum originale) is transmitted;
- Whether infants bear guilt prior to personal acts;
- The role of intention versus external action in constituting sin.
Some authorities stress inherited guilt and the need for baptismal remission; others emphasize conscious consent. Abelard’s juxtaposition of such texts anticipates later scholastic debates over the structure of moral agency and the nature of inherited disorder.
8.4 Interconnections
Although grouped thematically, Christology, grace, and free will are interwoven. Questions about whether Christ’s human will could deviate from the divine will intersect with larger issues about freedom under grace, while discussions of original sin frame the need for Christ’s redemptive work. Sic et Non presents these intersections not as a synthesis but as a network of problems for dialectical exploration.
9. Faith, Sacraments, and the Church
9.1 Nature of Faith
In its later sections, Sic et Non turns to faith (fides). Sample questions ask whether:
- Faith is primarily assent of the intellect, trust in God, or obedience;
- Faith without works suffices for salvation;
- Faith can increase or decrease, and in what sense.
Abelard collates authorities that highlight cognitive belief (e.g., accepting propositions revealed by God) alongside texts stressing personal trust or love, requiring readers to consider whether these are distinct aspects of one virtue or separate qualities.
9.2 Sacraments and Their Efficacy
A substantial group of questions concerns the sacraments, particularly baptism and the Eucharist:
- Whether baptism is necessary for salvation in every case, including infants or catechumens who die before receiving it;
- Whether sacraments confer grace by the work performed (ex opere operato) or require the disposition of the recipient;
- Whether sacraments administered by unworthy ministers are valid.
Abelard juxtaposes patristic texts speaking in absolute terms about sacramental necessity with others that appear to allow exceptions or emphasize God’s freedom. Questions about Eucharistic presence and sacrifice are treated by citing authorities that use varied metaphors and conceptual frameworks.
9.3 Boundaries and Authority of the Church
Related questions consider the Church (ecclesia):
- Whether salvation is possible outside the visible Church;
- How to understand the Church as body of Christ versus its institutional manifestation;
- The relative authority of councils, bishops, and the Roman See in settling doctrine.
Authorities are brought forward that speak both of the Church as a necessary ark of salvation and of God’s mercy toward those seemingly beyond its formal boundaries. Abelard also presents differing patristic emphases on local versus universal ecclesiastical authority.
9.4 Faith, Sacraments, and Community
By bringing together questions about faith, sacraments, and ecclesial structure, Sic et Non highlights the interdependence of belief, ritual practice, and institutional belonging. The unresolved tensions invite readers to examine how inward disposition, outward sign, and communal membership jointly contribute to the Christian life and to salvation.
10. Ethics, Law, and the Christian Life
10.1 Moral Precepts and Evangelical Counsels
The final groups of questions in Sic et Non address ethics and Christian conduct. They consider whether:
- The precepts of the Gospel are binding on all, or whether some are counsels of perfection (e.g., poverty, celibacy);
- Voluntary poverty or asceticism is superior to ordinary Christian life in the world;
- Certain practices (e.g., oaths, war) can ever be justified.
Patristic texts that praise radical renunciation are set against others that commend responsible use of worldly goods and the legitimacy of secular vocations.
10.2 Law: Old and New
A recurring set of questions examines the relation between Old Law and New Law:
- Whether Christians remain bound by aspects of Mosaic law;
- How to interpret Christ’s statements about not abolishing but fulfilling the Law;
- Whether the Old Law could confer salvation.
Abelard collates authorities emphasizing continuity of moral norms with those stressing the surpassing character of the New Covenant, leaving readers to distinguish between ceremonial, judicial, and moral elements.
10.3 Lying, Oaths, and Just War
Specific moral cases provide material for casuistry:
- Whether all lies are sinful, including so-called “helpful” or “jocose” lies;
- Whether oaths are permitted for Christians, in light of scriptural prohibitions;
- Whether war can be just, and under what circumstances.
Abelard places categorical condemnations alongside more nuanced or permissive texts, encouraging subtle distinctions—e.g., between misleading silence and explicit falsehood, or between unjust aggression and defense.
10.4 Moral Perfection and Human Capacity
A further line of questioning explores moral perfection:
- Whether perfection is possible in this life;
- Whether some saints have lived without sin after baptism.
Conflicting authorities are cited, some celebrating exemplary holiness, others insisting on universal weakness. These tensions link back to earlier discussions of grace and free will while focusing specifically on practical Christian living.
Overall, the ethical and legal questions present a spectrum of views on how Christians should navigate law, conscience, and concrete dilemmas, without prescribing a settled moral system.
11. Philosophical Method: Dialectic, Doubt, and Reconciliation
11.1 Dialectic in Theological Inquiry
At the methodological core of Sic et Non lies dialectic (dialectica), the logical art of examining opposing positions. Abelard applies tools drawn from Aristotelian logic (mediated through Boethius) to theological material, structuring investigation around problems rather than continuous exposition.
His approach involves:
- Formulating clearly delimited questions;
- Presenting opposing authorities as arguments;
- Inviting a critical assessment aiming at reconciliation (concordia).
Some historians see this as a direct transplantation of techniques from secular disputation to sacred doctrine; others emphasize continuities with earlier patristic uses of argument.
11.2 The Role of Doubt
Abelard’s famous statement about doubt underscores methodical uncertainty as a positive starting point. In Sic et Non, doubt is neither mere skepticism nor disbelief, but a heuristic device:
- It exposes apparent contradictions that might otherwise be harmonized too quickly;
- It compels the reader to seek reasons rather than rely solely on authority.
Supporters view this as an important step toward later scholastic reliance on structured objections and replies. Critics, past and present, have worried that encouraging doubt about authoritative texts might unsettle simple faith or exceed appropriate limits.
11.3 Reconciliation Without Synthesis in the Text
While the Prologue outlines principles of reconciliation, the main body of Sic et Non conspicuously withholds explicit reconciliations. Interpretations differ:
- One view holds that Abelard intentionally created a didactic laboratory, assuming that resolutions would be supplied orally in class or by the students themselves.
- Another suggests that the very absence of solutions is a methodological statement: theological truths are to be sought, not simply handed down.
In either case, the work presupposes that ultimate concord among authoritative sources is possible, even if it remains implicit.
11.4 Faith and Reason
Abelard’s method raises the question of how faith (fides) and reason (ratio) interact. The Prologue and related writings indicate that:
- Faith is taken as a commitment to the truth of revelation;
- Reason is deployed to clarify what that revelation means and to resolve misunderstandings.
Proponents argue that Sic et Non exemplifies harmony between faith and reason; critics contend that such intensive rational scrutiny risks subordinating faith to dialectic. The text itself does not directly adjudicate this tension, but its method became a touchstone in later debates over the philosophical analysis of doctrine.
12. Language, Ambiguity, and Interpretation
12.1 Ambiguity as Source of Apparent Contradiction
In the Prologue, Abelard highlights ambiguity (ambiguitas) in language as a frequent cause of conflicting statements. Words may have multiple senses, and failure to differentiate these can make authorities appear to disagree when they do not.
Examples include:
- Terms describing divine attributes (e.g., “power,” “knowledge”) used analogically or univocally;
- Moral terms (e.g., “sin,” “good”) employed in broader or narrower senses.
Abelard urges careful semantic analysis before treating a clash of statements as genuinely doctrinal.
12.2 Literal and Figurative Speech
A key interpretive distinction is that between literal and figurative (figura) language. Abelard argues that:
- Some scriptural and patristic expressions are metaphorical, intended to convey truths under images;
- Others must be taken literally, especially where core dogmas are at stake.
Apparent contradictions may arise when one text is figurative and another literal, or when authors use different metaphors for the same underlying reality. The interpreter must identify when anthropomorphic language about God, for instance, is symbolic rather than descriptive of change or passion.
12.3 Intention of the Author
Abelard places significant weight on authorial intention (intentio auctoris). The same words can bear different meanings depending on:
- The audience being addressed;
- The context (polemical, pastoral, speculative);
- The purpose (exhortation, clarification, consolation).
Consequently, reconciling authorities often involves reconstructing what each author aimed to achieve, not merely comparing surface formulations.
12.4 Textual and Philological Considerations
The Prologue also notes potential textual corruption and variant readings as sources of discrepancy. The same patristic work might circulate in different versions, and translations from Greek could introduce shifts in meaning.
Some scholars see Abelard here as anticipating later philological criticism, albeit in a rudimentary form. Others caution that his own citations sometimes show the limitations of 12th‑century textual resources.
12.5 Language and Theological Precision
Overall, Sic et Non treats language as both indispensable and problematic for theology. The work assumes that careful attention to words—distinguishing senses, genres, and intentions—can dissolve many apparent contradictions. At the same time, it implicitly acknowledges that some doctrinal mysteries may stretch the capacity of human language, contributing to the density of the problems it poses.
13. Relationship to Later Scholastic Forms (Sentences and Summae)
13.1 From Collections to Systematic Treatises
Síc et Non stands at an intermediate stage between early collectanea of patristic opinions and the later, more systematic Sentences and Summae. It preserves the form of a sentence collection (assembled authorities) but foregrounds unresolved tension rather than harmony.
Later 12th‑ and 13th‑century theology saw the rise of:
| Genre | Representative Work | Key Features |
|---|---|---|
| Sentences commentary | Peter Lombard, Libri Quattuor Sententiarum | Organized doctrinal loci, authorities and objections, master’s determinations |
| Summa theologiae | Thomas Aquinas, Summa Theologiae | Comprehensive systematic layout, formal objections, replies, and articles |
13.2 Influence on the Sentences Tradition
Many scholars argue that Abelard’s approach to organizing theological material by questions and opposed authorities paved the way for Peter Lombard’s Sentences. Parallels include:
- Use of loci (topics) such as God, creation, sacraments;
- Reliance on Augustinian and patristic excerpts;
- Engagement with apparent contradictions.
However, the Lombard differs in providing explicit solutions, integrating authorities into a more coherent framework. Some interpreters view Lombard’s work as, in part, a response to the methodological challenge posed by Sic et Non—retaining its critical tools while offering doctrinal closure.
13.3 Anticipation of the Quaestio-Article Structure
The disputed question (quaestio disputata) and later article format—objections, sed contra, respondeo, replies—share conceptual affinities with Sic et Non:
- Presentation of opposing reasons;
- Use of authoritative texts for both sides;
- Search for a harmonizing response.
Although Abelard does not supply the final respondeo, the preparatory stages are structurally similar. Historians of scholastic method often cite Sic et Non as an early instance of thematically ordered, logically framed theological problems.
13.4 Alternative Views on Its Influence
Not all scholars assign Sic et Non a direct causal role in the evolution of scholastic genres. Some argue that:
- The rise of university institutions and canon law collections independently fostered similar methods;
- Multiple masters contributed to the gradual formalization of disputation.
On this view, Sic et Non is one significant witness among several to a broader movement toward systematic theological reasoning, rather than the sole or primary originator.
Nonetheless, there is wide agreement that Abelard’s work exemplifies and crystallizes tendencies that the later Sentences and Summae would institutionalize.
14. Controversies and Criticisms of Sic et Non
14.1 Contemporary Suspicion
During Abelard’s lifetime, Sic et Non was associated—though not formally condemned—with broader concerns about his theological boldness. Traditionalist figures, such as Bernard of Clairvaux, criticized Abelard’s overall method for:
- Applying dialectic too freely to mysteries of faith;
- Seeming to place reason above authority.
While surviving records do not single out Sic et Non by name, later commentators often treat it as emblematic of the tendencies that alarmed Bernard and some church authorities.
14.2 Fear of Confusion and Skepticism
Both medieval and modern critics have expressed concern that presenting contradictions without explicit resolution might:
- Confuse less-trained readers;
- Encourage skeptical attitudes toward Scripture and the Fathers;
- Undermine confidence in the unity of doctrine.
Supporters respond that, in a pedagogical setting, the lack of written solutions was compensated by oral teaching and that the Prologue presupposes trust in an underlying concord.
14.3 Allegations of Tendentious Compilation
Some scholars argue that Abelard’s selection and arrangement of authorities is tendentious:
- Passages may be decontextualized or abbreviated in ways that sharpen apparent opposition;
- Some attributions follow medieval practices that do not align with modern textual criticism.
From this perspective, Sic et Non may construct problems that are partly artifacts of its own editorial choices. Others counter that Abelard largely operates within contemporary norms of citation and that highlighting tensions, even when accentuated, serves legitimate didactic aims.
14.4 Questions About Abelard’s Own Doctrine
Because Sic et Non withholds Abelard’s positions, interpreters debate:
- Whether the selection of questions hints at his preferred solutions;
- Whether omission of resolutions reflects prudence amid ecclesiastical scrutiny or simply a didactic design.
Some critics find this ambiguity unsatisfactory, arguing that it obscures Abelard’s doctrinal commitments. Others maintain that the text’s primary purpose is methodological rather than doctrinal, making such opacity appropriate.
14.5 Modern Assessments
Modern evaluations are diverse:
- Some historians praise Sic et Non as a pioneering work of critical theology, valuing its emphasis on inquiry.
- Others highlight its limitations, pointing to uneven coverage, lack of explicit arguments, and dependence on later reconstruction.
These debates continue to shape how Sic et Non is interpreted—as a bold but risky experiment, a cornerstone of scholasticism, or a complex mixture of both.
15. Legacy and Historical Significance
15.1 Contribution to Scholastic Method
Síc et Non is widely regarded as a formative text in the development of scholastic theology. Its structured question–authority–counter‑authority format anticipates later academic disputation and the quaestio as a standard teaching tool. Many scholars view it as helping to shift theological study from compilation of authorities to critical analysis of their interrelations.
15.2 Impact on Later Theologians
While direct lines of influence are sometimes difficult to trace, Sic et Non appears to have:
- Informed the atmosphere in which Peter Lombard composed the Sentences, integrating divergent patristic views into a more systematic whole;
- Encouraged later masters to articulate their own determinations after presenting conflicting texts, a practice visible in 13th‑century Summae.
Even where later authors diverged from Abelard’s positions, they often operated within a methodological framework to which his work contributed.
15.3 Role in the History of Hermeneutics
Abelard’s insistence on context, intention, figurative language, and textual variants has been interpreted as an early step toward more reflective hermeneutical practice in the Latin West. Sic et Non made the interpretive process itself a topic of explicit reflection, rather than an implicit background to exegesis.
15.4 Place in Intellectual History
Beyond theology, Sic et Non occupies a notable position in the broader history of philosophy and education:
- It demonstrates an attempt to reconcile rational inquiry with religious authority, influencing later discussions about their relationship.
- It exemplifies the early Parisian school culture that would evolve into the University of Paris, shaping the curricula and methods of medieval higher learning.
15.5 Modern Scholarly Reception
In modern times, Sic et Non has become central to academic study of Abelard and of medieval thought. Critical editions and translations have allowed closer examination of:
- Its textual history and manuscript transmission;
- Its role within Abelard’s corpus and the 12th‑century renaissance;
- Its influence on notions of doubt, argument, and authority.
Interpretations vary regarding its overall success, but there is broad agreement that Sic et Non represents a pivotal moment in the history of Western intellectual life, marking a transition toward more explicitly argumentative and problem‑driven theology.
Study Guide
intermediateThe basic idea of juxtaposing ‘yes’ and ‘no’ authorities is accessible, but fully appreciating Sic et Non requires comfort with medieval theology, some logical vocabulary, and patience with a text that withholds Abelard’s own answers.
Sic et Non (Yes and No) as a pedagogical method
A work that presents 158 theological questions, each supported by opposing authoritative texts answering ‘yes’ and ‘no,’ without explicit resolutions.
Quaestio (Question)
A formally posed problem around which authorities and arguments are organized, typically asking ‘whether’ some theological claim is true.
Auctoritas (Authority)
An authoritative text or writer—Scripture, a Church Father, or a conciliar decree—cited to support a doctrinal position.
Dialectica (Dialectic)
The logical art of analyzing and resolving contradictions through ordered argument, often using tools from Aristotelian logic.
Dubitatio (Methodical Doubt)
A deliberate form of questioning or uncertainty that prompts inquiry and leads, for Abelard, to clearer apprehension of truth.
Concordia (Reconciliation of Authorities)
The harmonization of apparently conflicting statements by appealing to context, intention, different senses of words, or development in doctrine.
Ambiguitas and Figura (Ambiguity and Figurative Speech)
Ambiguitas refers to words or phrases with multiple meanings; figura denotes figurative or non-literal language, especially in Scripture and patristic texts.
Faith (Fides) and Reason (Ratio) in Scholastic Theology
Faith is trust in divine revelation; reason is the human capacity for logical analysis. In Abelard’s view, reason clarifies what faith believes, rather than replacing it.
How does Abelard’s claim that ‘by doubting we come to inquiry; by inquiry we perceive the truth’ reshape our understanding of the role of doubt within a religious framework?
In what ways does the form of the quaestio in Sic et Non anticipate the later structure of disputed questions and Summae, despite Abelard’s refusal to give explicit resolutions?
To what extent does the Prologue’s emphasis on ambiguity, figurative language, and authorial intention make Sic et Non an early contribution to hermeneutics rather than only to logic?
Choose one thematic area (e.g., divine omnipotence, original sin, or the necessity of baptism). How might a student trained by Abelard attempt to reconcile a pair of conflicting authorities in that area using the Prologue’s principles?
Why might contemporaries like Bernard of Clairvaux have seen Abelard’s method as threatening, even if Abelard believed he was serving the truth of faith?
Does Sic et Non presuppose that all authoritative statements can ultimately be reconciled, or does its structure leave open the possibility of genuine, unresolved doctrinal disagreement?
How does Abelard’s treatment of ethics and casuistry (e.g., lies, oaths, just war) relate to his broader dialectical approach in doctrinal questions such as the Trinity or grace and free will?
In light of Sic et Non, how should we understand the relationship between Abelard’s work and Peter Lombard’s Sentences: is Lombard primarily correcting Abelard’s open-endedness, or building constructively upon his method?
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"yes-and-no." Philopedia, 2025, https://philopedia.com/works/yes-and-no/.
Philopedia. "yes-and-no." Philopedia. Accessed December 11, 2025. https://philopedia.com/works/yes-and-no/.
@online{philopedia_yes_and_no,
title = {yes-and-no},
author = {Philopedia},
year = {2025},
url = {https://philopedia.com/works/yes-and-no/},
urldate = {December 11, 2025}
}