It is not the events but our viewpoint toward events that is the determining factor. We ought to be more concerned about removing wrong thoughts from the mind than removing tumors and abscesses from the body.

It’s time to stop being vague. If you wish to be an extraordinary person, if you wish to be wise, then you should explicitly identify the kind of person you aspire to become.

Difficulty shows what men are. Therefore when a difficulty falls upon you, remember that God, like a trainer of wrestlers, has matched you with a rough young man. Why? So that you may become an Olympic conqueror; but it is not accomplished without sweat.

The wise realize that some things are within their control, and most things are not. They learn early on to distinguish between what they can and can't regulate.

Never depend on the admiration of others for self-satisfaction. It is a fact of life that other people, even people who love you, will not necessarily agree with your ideas, understand you always, or share your enthusiasms.

You may fetter my leg, but Zeus himself cannot get the better of my free will.

To the rational being only the irrational is unendurable, but the rational is endurable.