Never pick a fight with an ugly person, they've got nothing to lose.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

Generosity is giving more than you can, and pride is taking less than you need.

Don't criticize what you don't understand, son. You never walked in that man's shoes.

Only idiots refuse to change their minds.

Knowing yourself is the beginning of all wisdom.

Do not pray for an easy life, pray for the strength to endure a difficult one.

In order to change the world, you have to get your head together first

The more that you read, the more things you will know. The more that you learn, the more places you'll go.

Anger begins in folly, and ends in repentance.

Don't take tomorrow to bed with you.

It is always advisable to perceive clearly our ignorance.

So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.

Empty your cup so that it may be filled; become devoid to gain totality.

It is a cliche that most cliches are true, but then like most cliches, that cliche is untrue.

Confidence is contagious. So is lack of confidence.

A proverb is much matter distilled into few words.

The only way to get the best of an argument is to avoid it.

If you only read the books that everyone else is reading, you can only think what everyone else is thinking.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

The place where you made your stand never mattered. Only that you were there...and still on your feet.