I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

Everything has changed except the way man thinks (when the hydrogen bomb was exploded)

Mozart's music is so pure and beautiful that I see it as a reflection of the inner beauty of the universe.

To the extent math refers to reality, we are not certain to the extent we are certain, math does not refer to reality.

Is it not a terrible thing to be forced by society to do things which all of us as individuals regard as abominable crimes?

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.