Every answer cites the question and article it came from.
Grounded
Every answer comes from the text.
Cited
Every claim has a source
Each substantive sentence carries a citation to the question and article it comes from, so you can check the answer against Thomas's own words.
Verified
Checked against the Summa
After the answer streams, every citation and quotation is checked against the text. Anything that cannot be found is stripped before you read it.
Conversation
Keep questioning
Ask a follow-up, raise an objection, or push back. The conversation stays anchored to the text at every turn.
Structure
The disputation, intact
Objections, on the contrary, I answer that, replies: follow a citation into the whole article, laid out the way Thomas wrote it.
Free
Free for students and researchers
No plans and no fees. Sign in and start with any question the Summa treats.
Sources
Follow every citation into the article.
Reader
The article beside the answer
Click a citation to open the full article in a sources rail, with the quoted lines highlighted.
Corpus
The whole Summa Theologiae
All 614 questions and 3,125 articles of the 1920 English Dominican translation, Supplement included.
Further reading
New Advent and the Latin
Every article links out to New Advent and to the Latin text for study beyond the conversation.
Honest
An AI, not Thomas himself
Answers are generated by a language model speaking from the text of the Summa. A permanent note under the input says so.