"The word 'God' is for me nothing more than the expression and product of human weaknesses, the Bible a collection of honorable, but still primitive legends which are nevertheless pretty childish. No interpretation, no matter how subtle, can (for me) change this."
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones."
"Only a life lived for others is a life worthwhile."
"It is, in fact, nothing short of a miracle that the modern methods of instruction have not yet entirely strangled the holy curiosity of inquiry; for this delicate little plant, aside from stimulation, stands mainly in need of freedom. Without this it goes to wrack and ruin without fail."
"An empty stomach is not a good political adviser."
"Imagination is the highest form of research."