Almost all the progress ever made in human thought has been made by the Doubting Thomas's, the questioners, the challengers, the show-me crowd.

People rarely succeed unless they have fun in what they are doing.

Remember, today is the tomorrow you worried about yesterday.

It isn't what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.

If you are not in the process of becoming the person you want to be, you are automatically engaged in becoming the person you don't want to be.

Any fool can criticize, condemn and complain - and most fools do. But it takes character and self control to be understanding and forgiving.

Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.

When we hate our enemies, we are giving them power over us: power over our sleep, our appetites, our blood pressure, our health, and our happiness.

Instead of worrying about what people say of you, why not spend time trying to accomplish something they will admire.

The world is so full of people who are grabbing and self-seeking. So the rare individual who unselfishly tries to serve others has an enormous advantage. He has little competition.

The successful man will profit from his mistakes and try again in a different way.

Those who have easy cheerful attitudes tend to be happier than those with less pleasant temperaments regardless of money "making it" or success.

Infidelity is a deal breaker for me. I've broken up with people over it. You can't do monogamy 90 percent of the time.

I'm fine, I am just going to go over here and puke shards of my own pelvis into this bush.

People ask me how far I've come. And I tell them twelve feet: from the audience to the stage.

To give up is easy. But to hold it together when everyone else thinks you'd fall apart is true strength.

The more we have received in silence, the more we give in action.

Let's not pretend that mental phenomena can be mapped on to the characteristics of billiard balls.

No one trusts a model except the man who wrote it; everyone trusts an observation, except the man who made it.

Anybody who knows me knows my vote can't be bought.

The profuse phallic symbolism of chess provides some fantasy gratification of the homosexual wish, particularly the desire for mutual masturbation.