Everyday is an oportunity to make a new happy ending.

If one asks the whence derives the authority of fundamental ends, since they cannot be stated and justified merely by reason, one can only answer: they exist in a healthy society as powerful traditions, which act upon the conduct and aspirations and judgments of the individuals; they are there, that is, as something living, without its being necessary to find justification for their existence.

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

For every one billion particles of antimatter there were one billion and one particles of matter. And when the mutual annihilation was complete, one billionth remained - and that's our present universe.

What physics looks for: The simplest possible system of thought which will bind together the observed facts.

We have to do the best we are capable of. This is our sacred human responsibility.

Creativity is the residue of time wasted.