"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."

"I say there is no darkness but ignorance."

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

"Ignorance is the curse of God; knowledge is the wing wherewith we fly to heaven."