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 must be that evil communications corrupt good dispositions.
No just person ever became quickly rich.
He who labors diligently need never despair.
Man must be prepared for every event of life, for there is nothing that is durable.
Know thyself means this, that you get acquainted with what you know, and what you can do.