"It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure."
"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
"I never made one of my discoveries through the process of rational thinking"
"Never memorize something that you can look up."
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones."
"Man is here for the sake of other men - above all for those upon whose smiles and well-being our own happiness depends."