Phenomena complex-laws simple....Know what to leave out.

The game I play is a very interesting one. It's imagination, in a tight straightjacket.

All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.

The female mind is capable of understanding analytic geometry... The difficulty may just be that we have never yet discovered a way to communicate with the female mind. If it is done in the right way, you may be able to get something out of it.

You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts.

There is enough energy in a single cubic meter of space to boil all the oceans in the world.

All we know so far is what doesn't work.