"Success comes from knowing what you don't know more than from knowing what you do know."

"Knowing how to deal well with not knowing is far more important than knowing."

"If you live for the next world, you get this one in the deal; but if you live only for this world, you lose them both."

"I can't imagine a man really enjoying a book and reading it only once."

"If we find ourselves with a desire that nothing in this world can satisfy, the most probable explanation is that we were made for another world."

"Education without values, as useful as it is, seems rather to make man a more clever devil."