I think I can safely say that nobody understands Quantum Mechanics.

It is the fact that the electrons cannot all get on top of each other that makes tables and everything else solid.

Know how to solve every problem that has been solved.

It is our responsibility to leave the people of the future a free hand.

The game I play is a very interesting one. It's imagination in a straightjacket, which is this: that it has to agree with the known laws of physics. ... It requires imagination to think of what's possible, and then it requires an analysis back, checking to see whether it fits, whether its allowed, according to what's known, okay?

The real problem in speech is not precise language. The problem is clear language.

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.