Better to illuminate than merely to shine; to deliver to others contemplated truths than merely to contemplate.

Love follows knowledge.

Hold firmly that our faith is identical with that of the ancients. Deny this, and you dissolve the unity of the Church.

It is a sin directly against one's neighbour, since one man cannot over-abound in external riches, without another man lacking them.

If a man deliberately abstains from wine to such an extent that he does serious harm to his nature, he will not be free from blame.

Love is a binding force, by which another is joined to me and cherished by myself.

The theologian considers sin mainly as an offence against God; the moral philosopher as contrary to reasonableness.