The chief beginning of evil is goodness in excess.
Know thyself means this, that you get acquainted with what you know, and what you can do.
Everything is destroyed by its own particular vice: the destructive power resides within. Rust destroys iron, moths destroy clothes, the worm eats away the wood; but greatest of all evils is envy, impious habitant of corrupt souls, which ever was, is, and shall be a consuming disease.
It is not hoary hairs that bring wisdom; some have an old head on young shoulders.
Marriage, if one will face the truth, is an evil, but a necessary evil.
He who labors diligently need never despair.