Some things are up to us [eph' hêmin] and some things are not up to us. Our opinions are up to us, and our impulses, desires, aversions–in short, whatever is our own doing. Our bodies are not up to us, nor are our possessions, our reputations, or our public offices, or, that is, whatever is not our own doing.

Give me by all means the shorter and nobler life, instead of one that is longer but of less account!

To be getting an education means this: to be learning what is your own, and what is not your own.

You have been given your own work to do. Get to it right now, do your best at it, and don't be concerned with who is watching you. Create your own merit.

Act well your given part; the choice rests not with you.

Man is troubled not by events, but by the meaning he gives them.

Consider first the nature of the business in hand; then examine thy own nature, whether thou hast strength to undertake it.