It is impossible for a man to learn what he thinks he already knows.

To get or not to get what we desire can be equally disappointing.

Learn to distinguish what you can and can't control. Within our control are our own opinions, aspirations, desires and the things that repel us. They are directly subject to our influence.

It is not he who reviles or strikes you who insults you, but your opinion that these things are insulting.

Wealth consists not in having great possessions, but in having few wants.

When you close your doors, and make darkness within, remember never to say that you are alone, for you are not alone; nay, God is within, and your genius is within. And what need have they of light to see what you are doing?

When we act pugnaciously, and injuriously, and angrily, and rudely, to what level have we degenerated? To the level of the wild beasts. Well, the fact is that some of us are wild beasts of a larger size, while others are little animals, malignant and petty.