I have learned to use the word 'impossible' with the greatest caution.

My experiences with science led me to God. They challenge science to prove the existence of God. But must we really light a candle to see the sun?

Science does not have a moral dimension. It is like a knife. If you give it to a surgeon or a murderer, each will use it differently.

Basic research is what I am doing when I don't know what I am doing.

It was very successful, but it fell on the wrong planet.

The rocket worked perfectly, except for landing on the wrong planet.

It takes sixty-five thousand errors before you are qualified to make a rocket.

The best computer is a man, and it’s the only one that can be mass-produced by unskilled labor.

Don't tell me that man doesn't belong out there. Man belongs wherever he wants to go - and he'll do plenty well when he gets there.

I believe in an immortal soul. Science has proved that nothing disintegrates into nothingness. Life and soul, therefore, cannot disintegrate into nothingness, and so are immortal.

Conquering the universe one has to solve two problems: gravity and red tape. We could have mastered gravity.

To feel the joy of life, sell your pride and get lost in the simplicity and humility.

It was a lot more fun to get famous than to be famous.

When you learn to talk people up, you will never talk yourself down.

Raise $500 for a thing you care about because you actually get the experience of taking an idea and actually doing it. There are fewer and fewer excuses not to.

I've always held the song in high regard because songs have got me through so many sinks of dishes and so many humiliating courting events.

Heather and I decided we were going to be pretty low-key at the convention.

The smile is the dance of the face - the dance is the smile of the limbs.

My advice to Sarah Palin is, you've got a hot bod; don't keep it to yourself. Why wear a pantsuit when you can wear a swimsuit?

My life is very much consumed with work.

I'm not West Coast at all. I was born in Atlanta, but I grew up in Kentucky, outside of Lexington, in Winchester.