"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."

"You must be asking which door is the true one; not which pleases you best."

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

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

"Write about what really interests you, whether it is real things or imaginary things, and nothing else."