Our own evil inclinations are far more dangerous than any external enemies.

Cogito cogito ergo cogito sum (I think that I think, therefore I think that I am.)

When you are at Rome, live as Romans live.

The body should be bedecked naturally and without affectation, with simplicity, with neglect rather than nicety, not with costly and dazzling apparel, but with ordinary clothes, so that nothing be lacking to honesty and necessity, yet nothing be added to increase its beauty.

No one heals himself by wounding another.

The Lord Jesus himself proclaims, 'This is My Body.' Before the blessing of the heavenly words something of another character is spoken of; after consecration it is designated 'body'. He himself speaks of his blood. Before the consecration it is spoken of as something else; after the consecration it is spoken of as 'blood'. And you say, 'Amen', that is, 'It is true.' What the mouth speaks, let the mind within confess; what the tongue utters, let the heart feel.

The emperor is in the Church, not about the Church.