“An education which does not cultivate the will is an education that depraves the mind. An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you know and what you don't
“Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together
“All intelligent thoughts have already been thought; what is necessary is only to try to think them again
“Every man is a damn fool for at least five minutes every day; wisdom consists in not exceeding the limit