"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."

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

"Have more than you show, Speak less than you know."

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