Gentlemen, now you will see that now you see nothing. And why you see nothing you will see presently.

All of physics is either impossible or trivial. It is impossible until you understand it, and then it becomes trivial.

Never say, "I tried it once and it did not work."

A theory that you can't explain to a bartender is probably no damn good.

We haven't got the money, so we've got to think.

An alleged scientific discovery has no merit unless it can be explained to a barmaid.

It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.

If your experiment needs statistics, you ought to have done a better experiment.

The only possible conclusion the social sciences can draw is: some do, some don't.

All science is either physics or stamp collecting.

I must confess it was very unexpected and I am very startled at my metamorphosis into a chemist.

Let the radiance of light be your guide.

Maybe, " she said. "Maybe. But now you're making promises you might not be able to keep, and that's how people in love get very badly hurt.

If people don't want you to question something, that probably means you should question it.

Makeup is a way for a woman to look and feel like herself, only prettier and more confident

I know my limitations. I know I'm not perfect. I know what I know, but more importantly, I know what I don't know. When I don't know something, I surround myself with people I can trust to teach me.

I love feeling in touch with Mother Nature. Spending time outside - whether it's hiking, biking, walking on the beach, or lying in the sun - brings me clarity and energy.

There are so many highs and lows for an athlete. But the highs outweigh the lows.

You can't eat fish. It's 6,000 parts DDT per million all over the world, not counting radiation.

In the 21st century, somebody or something has changed the rules about how our world works.

Touch me again, and it will be your last act in life - Blue Eyes.