Suffering arises from trying to control what is uncontrollable, or from neglecting what is within our power.

What disturbs and alarms man are not the things, but his opinions and fancies about the things.

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.

We ought to flee the friendship of the wicked, and the enmity of the good.

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.

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

A man that seeks truth and loves it must be reckoned precious to any human society.