The only justification for our concepts and systems of concepts is that they serve to represent the complex of our experiences; beyond this they have not legitimacy.

It is a miracle that curiosity survives formal education.

I never thought that others would take my theories so much more seriously than I did.

You teach me baseball and I'll teach you relativity...No we must not. You will learn about relativity faster than I learn baseball.

Marie Curie is, of all celebrated beings, the only one whom fame has not corrupted.

It's not that life has been easy, perfect or exactly as expected. I just choose to be happy and grateful no matter how it all turns out. If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed.

Assumptions are made and most assumptions are wrong.