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.

Silence is often advantageous.

By associating with wise people you will become wise yourself.

In many things it is not well to say, "Know thyself"; it is better to say, "Know others."

It is not hoary hairs that bring wisdom; some have an old head on young shoulders.

To live is not to live for one's self; let us help one another.

It must be that evil communications corrupt good dispositions.