“Intelligence is the wife, imagination is the mistress, memory is the servant ”

“All intelligent thoughts have already been thought; what is necessary is only to try to think them again ”

“There is no worse sorrow than remembering happiness in the day of sorrow”

“Happiness is nothing more than good health and a bad memory ”

“Yesterday is but today's memory, and tomorrow is today's dream ”

“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 ”