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

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

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

"We live, in fact, in a world starved for solitude, silence, and private: and therefore starved for meditation and true friendship."

"I say there is no darkness but ignorance."

"In friendship, as in love, we are often happier through our ignorance than our knowledge."