The mark of highest originality lies in the ability to develop a familiar idea so fruitfully that it would seem no one else would ever have discovered so much to be hidden in it. – Goethe
To say yes, you have to sweat and roll up your sleeves and plunge both hands into life up to the elbows. It is easy to say no, even if saying no means death. – Jean Anouilh, Antigone, 1942
It is a safe rule to apply that, when a mathematical or philosophical author writes with a misty profundity, he is talking nonsense. – Alfred North Whitehead