"The universe is not only stranger than we imagine, it is stranger than we can imagine."

"The human mind is capable of understanding the universe."

"The measure of a man is what he does with power."

"Mathematics, rightly viewed, possesses not only truth, but supreme beauty — a beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous tra…"

"The greatest discovery of all time is that man can change his future by merely changing his attitude."