If we are not ashamed to think it, we should not be ashamed to say it.

It is a man's own dishonesty, his crimes, his wickedness, and boldness, that takes away from him soundness of mind; these are the furies, these the flames and firebrands, of the wicked.

Friendship is nothing else than entire fellow feeling as to all things human and divine with mutual good-will and affection; and I doubt whether anything better than this, wisdom alone excepted, has been given to man.

Every evil in the bud is easily crushed: as it grows older, it becomes stronger.

Man is his own worst enemy.

The authority of those who teach is often an obstacle to those who want to learn.

Nor am I ashamed, as some are, to confess my ignorance of those matters with which I am unacquainted.