Where the Latin comes from

Aquinian helps you examine the original Latin of the Summa Theologiae by checking citations against the source. The Latin comes from Corpus Thomisticum, and we show it with the permission of the Fundación Tomás de Aquino.

Permission statement

Text: Corpus Thomisticum, Fundación Tomás de Aquino, used with permission. Prof. Enrique Alarcón, for the Fundación, gave us written permission for limited, user-initiated lookups of individual Summa Theologiae articles. Permission is not endorsement. The Fundación doesn't review or vouch for Aquinian, its answers or its interpretations. Read the permission

What the permission covers

  • Single articles from parts I, I-II, II-II and III of the Summa Theologiae.
  • A lookup only runs when you click Look up or Look up all. Nothing is fetched in the background.
  • Citations outside those parts, including the Supplement, show Not in source.

How the Latin is shown

Each article appears with its attribution, the edition line from the Corpus Thomisticum page, and a link back to that page on Corpus Thomisticum. If you want to read further, go to the source.

What we don't do

  • We don't store Corpus Thomisticum text.
  • We don't use it to train any model.
  • We don't mirror or republish it.

Why lookups are spaced out

Lookups are rate-limited and run a few seconds apart on purpose. That's the modest rate the permission allows. The permission serves the Fundación's scholarly mission, and the Fundación can withdraw it. If that happens, Corpus lookups stop.

Two checks, kept apart

Every cited source has two separate records: what Aquinian checked, and what you checked. Neither one stands in for the other.

  • Opening a source or looking it up marks it as opened. Your check stays Pending. Opening isn't verification.
  • Press Confirm match once you've read it and it says what the answer claims. That records User verified.
  • Press Flag discrepancy if it doesn't match. That records Discrepancy.
  • Your decision stays on the record. Opening the source again doesn't reset it.
  • Aquinian's own label, even AI verified, never replaces your reading. User verified means you confirmed it, not Aquinian.

Deeper AI match

If you want a model to read the retrieved text against the claim, press Deeper AI match. It uses extra credits. It's the only path that can give an AI verified label, and it's still separate from your check.

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