Perfection of moral virtue does not wholly take away the passions, but regulates them.

God should not be called an individual substance, since the principle of individuation is matter.

Practical sciences proceed by building up; theoretical science by resolving into components.

A man should remind himself that an object of faith is not scientifically demonstrable, lest presuming to demonstrate what is of faith, he should produce inconclusive reasons and offer occasion for unbelievers to scoff at a faith based on such ground.

Far graver is it to corrupt the faith that is the life of the soul than to counterfeit the money that sustains temporal life.

To convert somebody go and take them by the hand and guide them.

Better to illuminate than merely to shine.