Happiness and freedom begin with a clear understanding of one principle: Some things are within our control, and some things are not.

Preach not to others what they should eat, but eat as becomes you and be silent.

We should do everything both cautiously and confidently at the same time.

It is no easy thing for a principle to become a man's own unless each day he maintains it and works it out in his life.

Man is not worried by real problems so much as by his imagined anxieties about real problems

One that desires to excel should endeavor in those things that are in themselves most excellent.

Either God wants to abolish evil, and cannot; or he can, but does not want to.