Fontes
Direct routes into Aristotle, Saint Thomas, councils, the Magisterium, Scripture and patristic witnesses used by the completed dossiers.
START HERE · FOR THE SEARCHER
Begin with ordinary experience and the precise claim being examined. Follow the reasoning one step at a time; technical distinctions and formal objections remain available in the optional sections when they are needed.
1 · UNDERSTAND
Different sources answer different questions. A manuscript can establish textual history; a creed can define doctrine; a Father can witness ancient reception; a council can judge a controversy; a historian can reconstruct context.
2 · WHY IT MATTERS
The credibility of a conclusion depends on the evidence that carries it. Distinguishing primary witness, later interpretation, doctrine and historical reconstruction protects the search from both credulity and selective scepticism.
3 · WHERE THE EVIDENCE LEADS
Use the earliest and most authoritative source proportionate to the question, then distinguish revelation, interpretation, theological reasoning and historical evidence.
READ IN THIS ORDER
This optional layer verifies the conclusion instead of merely repeating it. It identifies the controlling terms, dates the decisive witnesses, links the primary texts and states which premise the strongest contrary case must deny.
TERMS AND SCOPE
Different sources answer different questions. A manuscript can establish textual history; a creed can define doctrine; a Father can witness ancient reception; a council can judge a controversy; a historian can reconstruct context.
CHRONOLOGICAL CONTROL
No date by itself decides the question. Establish the origin of the claim, the earliest witness and every later reinterpretation before treating continuity as proved.
PRIMARY EVIDENCE
The source map privileges the existing Catholon readers. Philosophical texts establish arguments and terminology; councils and papal documents identify Catholic doctrine and its authority; Scripture belongs to the revealed stage; historical sources establish what persons and communities actually said and did.
Open Sources are evidence only when genre, authority and context are identifiedSTRONGEST CONTRARY CASE
The strongest contrary case must deny or qualify one of the stated premises. Open the objection and reply sections below rather than substituting a weaker position.
Degree of certainty. Keep demonstrative conclusions, historical probability, textual interpretation and Catholic doctrinal judgement distinct. The page states each conclusion only at the level warranted by its premises and sources.
Fontes
The source map privileges the existing Catholon readers. Philosophical texts establish arguments and terminology; councils and papal documents identify Catholic doctrine and its authority; Scripture belongs to the revealed stage; historical sources establish what persons and communities actually said and did.
A citation is not decorative. You should be able to open the work, locate the question or passage, compare context and distinguish a text’s authority from the truth of an argument offered within it.
Reader routes
Used in Why first philosophy precedes apologetics. Open the complete reader context rather than relying on an isolated quotation.
Used in Why first philosophy precedes apologetics. Open the complete reader context rather than relying on an isolated quotation.
Used in Why first philosophy precedes apologetics. Open the complete reader context rather than relying on an isolated quotation.
Used in Realism and the external world. Open the complete reader context rather than relying on an isolated quotation.
Used in Realism and the external world. Open the complete reader context rather than relying on an isolated quotation.
Used in Realism and the external world. Open the complete reader context rather than relying on an isolated quotation.
Used in Sensation, abstraction and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Sensation, abstraction and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Sensation, abstraction and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Truth, judgment, certainty and error. Open the complete reader context rather than relying on an isolated quotation.
Used in Truth, judgment, certainty and error. Open the complete reader context rather than relying on an isolated quotation.
Used in Truth, judgment, certainty and error. Open the complete reader context rather than relying on an isolated quotation.
Used in Being and the first principles of thought. Open the complete reader context rather than relying on an isolated quotation.
Used in Being and the first principles of thought. Open the complete reader context rather than relying on an isolated quotation.
Used in Being and the first principles of thought. Open the complete reader context rather than relying on an isolated quotation.
Used in The causal principle and real powers. Open the complete reader context rather than relying on an isolated quotation.
Used in The causal principle and real powers. Open the complete reader context rather than relying on an isolated quotation.
Used in The causal principle and real powers. Open the complete reader context rather than relying on an isolated quotation.
Used in Act, potency and the possibility of change. Open the complete reader context rather than relying on an isolated quotation.
Used in Act, potency and the possibility of change. Open the complete reader context rather than relying on an isolated quotation.
Used in Act, potency and the possibility of change. Open the complete reader context rather than relying on an isolated quotation.
Used in Hylomorphism: matter, form and the unity of bodies. Open the complete reader context rather than relying on an isolated quotation.
Used in Hylomorphism: matter, form and the unity of bodies. Open the complete reader context rather than relying on an isolated quotation.
Used in Hylomorphism: matter, form and the unity of bodies. Open the complete reader context rather than relying on an isolated quotation.
Used in Substance, accident and enduring identity. Open the complete reader context rather than relying on an isolated quotation.
Used in Substance, accident and enduring identity. Open the complete reader context rather than relying on an isolated quotation.
Used in Substance, accident and enduring identity. Open the complete reader context rather than relying on an isolated quotation.
Used in Essence and existence in created beings. Open the complete reader context rather than relying on an isolated quotation.
Used in Essence and existence in created beings. Open the complete reader context rather than relying on an isolated quotation.
Used in Essence and existence in created beings. Open the complete reader context rather than relying on an isolated quotation.
Used in The four causes and complete explanation. Open the complete reader context rather than relying on an isolated quotation.
Used in The four causes and complete explanation. Open the complete reader context rather than relying on an isolated quotation.
Used in The four causes and complete explanation. Open the complete reader context rather than relying on an isolated quotation.
Used in Essential and accidental causal series. Open the complete reader context rather than relying on an isolated quotation.
Used in Essential and accidental causal series. Open the complete reader context rather than relying on an isolated quotation.
Used in Essential and accidental causal series. Open the complete reader context rather than relying on an isolated quotation.
Used in Contingency, necessity and dependent existence. Open the complete reader context rather than relying on an isolated quotation.
Used in Contingency, necessity and dependent existence. Open the complete reader context rather than relying on an isolated quotation.
Used in Contingency, necessity and dependent existence. Open the complete reader context rather than relying on an isolated quotation.
Used in Participation and received perfection. Open the complete reader context rather than relying on an isolated quotation.
Used in Participation and received perfection. Open the complete reader context rather than relying on an isolated quotation.
Used in Participation and received perfection. Open the complete reader context rather than relying on an isolated quotation.
Used in Finality, teleology and natural order. Open the complete reader context rather than relying on an isolated quotation.
Used in Finality, teleology and natural order. Open the complete reader context rather than relying on an isolated quotation.
Used in Finality, teleology and natural order. Open the complete reader context rather than relying on an isolated quotation.
Used in The transcendentals: unity, truth, goodness and beauty. Open the complete reader context rather than relying on an isolated quotation.
Used in The transcendentals: unity, truth, goodness and beauty. Open the complete reader context rather than relying on an isolated quotation.
Used in The transcendentals: unity, truth, goodness and beauty. Open the complete reader context rather than relying on an isolated quotation.
Used in Analogy of being and language about God. Open the complete reader context rather than relying on an isolated quotation.
Used in Analogy of being and language about God. Open the complete reader context rather than relying on an isolated quotation.
Used in Analogy of being and language about God. Open the complete reader context rather than relying on an isolated quotation.
Used in The human person: body and rational soul. Open the complete reader context rather than relying on an isolated quotation.
Used in The human person: body and rational soul. Open the complete reader context rather than relying on an isolated quotation.
Used in The human person: body and rational soul. Open the complete reader context rather than relying on an isolated quotation.
Used in Intellect, immateriality and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Intellect, immateriality and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Intellect, immateriality and universal knowledge. Open the complete reader context rather than relying on an isolated quotation.
Used in Will, freedom and rational appetite. Open the complete reader context rather than relying on an isolated quotation.
Used in Will, freedom and rational appetite. Open the complete reader context rather than relying on an isolated quotation.
Used in Will, freedom and rational appetite. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural law and objective moral order. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural law and objective moral order. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural law and objective moral order. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural science and metaphysics. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural science and metaphysics. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural science and metaphysics. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural theology and the order of demonstration. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural theology and the order of demonstration. Open the complete reader context rather than relying on an isolated quotation.
Used in Natural theology and the order of demonstration. Open the complete reader context rather than relying on an isolated quotation.
Used in The divine attributes from the first cause. Open the complete reader context rather than relying on an isolated quotation.
Used in The divine attributes from the first cause. Open the complete reader context rather than relying on an isolated quotation.
Used in The divine attributes from the first cause. Open the complete reader context rather than relying on an isolated quotation.
Used in The scholastic question: objections, proof and replies. Open the complete reader context rather than relying on an isolated quotation.
Used in The scholastic question: objections, proof and replies. Open the complete reader context rather than relying on an isolated quotation.
Used in From natural theology to the possibility of revelation. Open the complete reader context rather than relying on an isolated quotation.
Used in From natural theology to the possibility of revelation. Open the complete reader context rather than relying on an isolated quotation.
Used in From natural theology to the possibility of revelation. Open the complete reader context rather than relying on an isolated quotation.
Used in The five ways. Open the complete reader context rather than relying on an isolated quotation.
Used in First mover. Open the complete reader context rather than relying on an isolated quotation.
Auctoritas et usus
Before a source is cited, the reader should know what the citation is expected to establish. A philosophical text can supply a demonstration without being an act of the Magisterium. A conciliar definition can establish what the Church proposes without proving every philosophical premise by authority alone. A hostile or neutral witness can establish a historical fact without becoming a theological norm.
Scripture is inspired revelation and is read according to literary form, canonical unity and apostolic faith. A biblical text may teach a truth directly, presuppose it, typologically signify it or record a speaker without endorsing every word spoken.
A proof must identify which of these functions is present.
Tradition transmits the apostolic deposit in preaching, sacramental practice, rule of faith and ecclesial life. Stable liturgical confession can witness doctrine, while a local or late custom must not be treated automatically as universal apostolic evidence.
Antiquity, catholicity and continuity matter.
A Father may be cited for exegesis, historical testimony, philosophical argument or doctrinal witness. One sentence proves neither universal consent nor personal infallibility. Convergent testimony across regions and generations carries a different weight from an isolated speculation.
The main work and controversy must be opened.
The subject, object, form and intention of an ecclesiastical act determine its authority. A dogmatic definition, a disciplinary canon, a historical preface and an allocution do not bind in the same manner merely because they appear in an official collection.
Doctrine Answers supplies the distinctions.
Aristotle and Saint Thomas are not cited as substitutes for demonstration. Their texts identify arguments, terms and distinctions that must be tested by reason. The authority of a master helps the student find the question; it does not make a contradiction true.
Commentary should remain subordinate to the primary text.
An atheist, materialist, gnostic or separated Christian movement should be represented from sources that responsible adherents recognize. Polemical summaries can identify questions but cannot carry the decisive burden when an official confession, founder's text or academic critical edition is available.
Variations within a movement must be named.
Fontes ad prima principia
The positive demonstrations are anchored in Summa Theologiae I q.2 a.3, Summa Contra Gentiles I, Aristotle, Physics VIII and Metaphysics XII, and the Catholic teaching on natural knowledge in Vatican I, Dei Filius. The philosophical texts carry the demonstrations; the council establishes that their object is knowable by natural reason.
The dossier distinguishes ancient atomism, modern humanism, scientific naturalism and the existential protest from evil. Opposing claims should be checked in their own texts, while the Catholic response draws upon Wisdom 13 and Romans 1, Aquinas on evil and providence, Fides et Ratio, and the metaphysical dossiers rather than a single proof text.
The central documentary distinction is between the incomprehensibility of the divine essence and the real knowability of God from effects. Compare Lateran IV on Creator-creature likeness, Dei Filius, Summa Theologiae I q.12, and the dossier on analogy of being.
The positive case for hylomorphism and intellectual immateriality proceeds through Aristotle, De anima, Summa Theologiae I q.75–89, and the Council of Vienne. Contemporary physical theories should be cited for their scientific claims, not silently transformed into the philosophical thesis that only matter exists.
Historical reconstruction should begin with the surviving gnostic writings and the critics who knew the movements: Irenaeus, Against Heresies, Hippolytus, Tertullian, the creation narratives in Genesis 1, John 1 and Colossians 1, and the Christological definitions gathered in the conciliar reader.
Disciplina citationis
A source route should be placed where the reader needs to test a claim. If a dossier says that Aquinas did not make the temporal beginning of the world a premise of the First Way, the link belongs beside that statement and should open the relevant work or question. If it says that an ancient sect taught a dualism of gods, the link should open the sect's text or a near-contemporary witness rather than only a modern encyclopedia.
Quotation must preserve the argumentative unit. A sentence beginning with “but,” “therefore” or “on the contrary” cannot ordinarily be understood without the preceding objection or distinction. Translation should be identified when the wording carries doctrinal weight; Latin, Greek or another original text should remain available in the parallel reader wherever possible.
Historical absence must be handled with equal care. Failure to find an early formula is not automatically proof that the belief did not exist; later terminology is not automatically proof that the object was newly invented. The evidence includes worship, controversy, institutional acts, biblical interpretation and convergent testimony, and the conclusion must be proportioned to the surviving record.
A source can be genuine and still be misused. A papal letter may address a local discipline; a Father may report an opponent without approving him; a canon may use a legal definition narrower than a theological one. Catholon therefore links the document and explains the relation between the cited text and the proposition it is used to support.
WHAT THIS MEANS FOR YOUR SEARCH
Use the earliest and most authoritative source proportionate to the question, then distinguish revelation, interpretation, theological reasoning and historical evidence.
This judgement concerns propositions and evidence, not the human worth of every person who holds them. Truth, personal culpability and pastoral charity must be distinguished without treating contradictory claims as equally true.
