We're terrible animals. I think that the Earth's immune system is trying to get rid of us, as well it should.

And I urge you to please notice when you are happy, and exclaim or murmur or think at some point, 'If this isn't nice, I don't know what is.

Do not let the bitterness steal your sweetness.

Hate, in the long run, is about as nourishing as cyanide.

Well here you are, there it is, THIS is what it's all about.

Science is magic that works.

Nobody will stop you from creating. Do it tonight. Do it tomorrow. That is the way to make your soul grow.

The secret to success in any human endeavor is total concentration.

If people insist on living as if there's no tomorrow, there really won't be one.

Be patient. Your future will come to you and lie down at your feet like a dog who knows and loves you no matter what you are.

People say there are no atheists in foxholes. A lot of people think this is a good argument against atheism. Personally, I think it's a much better argument against foxholes.

As stupid and vicious as men are, this is a lovely day.

Everything is nothing, with a twist.

Unannounced changes in life's itinerary are like dancing lessons from God.

Dear future generations: Please accept our apologies. We were rolling drunk on petroleum.

I want to stand as close to the edge as I can without going over. Out on the edge you see all the kinds of things you can't see from the center.

Those who believe in telekinetics, raise my hand.

And a step backward, after making a wrong turn, is a step in the right direction.

We are here on Earth to fart around. Don't let anybody tell you any different.