more from Thomas Aquinas

Single Idea 23173

[catalogued under 5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence]

Full Idea

In syllogistic arguments, granted one absurdity, others must follow too.

Gist of Idea

If a syllogism admits one absurdity, others must follow


Thomas Aquinas (Summa Theologicae [1265], I-II Q19 6)

Book Reference

Aquinas,Thomas: 'On Law, Morality and Politics', ed/tr. Baumgarth,W. /Regan R. [Hackett 1988], p.9

A Reaction

This asserts the necessity of logical consequence, which he derives from Aristotle.