Summa Theologiae
Written for Dominican instruction between 1265 and 1274, the Summa remained unfinished; the Supplement was assembled after Thomas’s death from other writings.
Explore this workVisit the source(new tab)Medieval scholasticism · Theology · c. 1225–1274
Thomas Aquinas
Reason together toward the good.
Italy · Paris · Cologne
Bibliography
Return to the texts.
Works, testimonies and further readings are distinguished. Dates refer to composition or first publication, as specified in each entry.
Bibliographic scope
This bibliography brings together major treatises, disputed questions, commentaries and compilations. It does not inventory every sermon, short work, letter, biblical commentary or attributed text; consult the critical catalogue for transmission and disputed attributions.
Summa contra Gentiles
Its four books were written around 1259–1265; their arrangement combines philosophical demonstrations, opposing arguments and exposition of Christian mysteries.
Explore this workVisit the source(new tab)On Being and Essence
Written early in Aquinas’s Paris career, it draws on Aristotle and Avicenna through the scholastic vocabulary of the thirteenth century.
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The questions derive from disputations held during Aquinas’s first Paris mastership, roughly between 1256 and 1259.
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Usually dated to the Roman period around 1265–1266, they preserve a disputational teaching format distinct from the Summa’s plan.
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The collection brings together disputations from Aquinas’s mature period; their exact dates and order of composition remain debated.
Explore this workVisit the source(new tab)On the Unity of the Intellect against the Averroists
Written in 1270 amid Parisian controversies, the treatise addresses Latin positions associated with the reception of Averroes; their precise historical identification is debated.
Explore this workVisit the source(new tab)On the Eternity of the World
Written around 1270 amid university controversy, it does not deny the Christian doctrine of a beginning; it examines whether philosophy can demonstrate one.
Explore this workVisit the source(new tab)On Kingship
Written for the king of Cyprus and left unfinished, the transmitted work received a continuation attributed to Ptolemy of Lucca; editions do not always delimit the text identically.
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It arose from his Paris teaching as a bachelor during the 1250s; its organization follows a medieval textbook rather than the Summa’s plan.
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This Latin commentary belongs to Thomas’s final years and uses medieval translations and teaching traditions.
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The work is unfinished: the transmitted sections should not be confused with a complete treatise finalized by its author.
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Aquinas organizes a chain of patristic passages from Latin sources and Greek translations; he did not write each extract as a sentence of his own.
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This mature commentary relies on a medieval Latin translation and a long history of Greek and Arabic readings.
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