Whoever does not regard what he has as most ample wealth, is unhappy, though he be master of the world.

No man is free who is not master of himself.

As in walking it is your great care not to run your foot upon a nail, or to tread awry, and strain your leg; so let it be in all the affairs of human life, not to hurt your mind or offend your judgment. And this rule, if observed carefully in all your deportment, will be a mighty security to you in your undertakings.

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.

He who exercises wisdom exercises the knowledge which is about God.

Ask yourself, "How are my thoughts, words and deeds affecting my friends, my spouse, my neighbour, my child, my employer, my subordinates, my fellow citizens?"

There is only one way to happiness and that is to cease worrying about things which are beyond the power of our will.