Conversion, 479. of complex propositions, 709. by contraposition, 516. illative, 481. by negation, 504. per accidens, 487. simple, 486. rules of, 482.

This doctrine rests on Cardinal Newman's celebrated theory of the "Illative Sense."

It is Newman's 'Illative Sense'- aconvictionarising from well-springsfar deeper and purer than those that account for human reason.