treatise · medieval
Summa Theologiae
St. Thomas Aquinas · 1265–1274
The Summa Theologiae is St. Thomas Aquinas's unfinished masterwork: a structured path from God, through creation and the moral life, to Christ and the sacraments. Written for beginners in theology, it became the Church's baseline for scholastic clarity. This hub gathers the articles we host so readers can enter by question rather than drowning in an undifferentiated dump of public-domain text.
Parts of this work
How to read the Summa here
We publish the Summa gradually, article by article, each with a plain-English summary and internal links. Start with Whether God exists (I, Q.2, A.3) — the Five Ways — then return to this hub as further questions are added.
For formation that pairs prayer with study, see also St. Benedict and our guide The Rule of St. Benedict for Laymen.