Never say of anything I have lost it, only say that I have given it back.

Silence is safer than speech.

Don't be concerned who is watching you. The triumphs and merits of others belong to them - as do yours to you. Make the most of what you've got.

Freedom and happiness come from understanding - and working with - our limits. Begin at once a program of self-mastery. Stick with your purpose. Do not seek external approval. Do not worry about anything outside of your control. The only things you command are your thoughts and actions. We choose our response. Stop aspiring to be anyone other than your own best self: for that does fall within your control.

What concerns me is not the way things are, but rather the way people think things are.

Wherever any one is against his will, that is to him a prison.

What is the first business of one who practices philosophy? To get rid of self-conceit. For it is impossible for anyone to begin to learn that which he thinks he already knows.