"That which is impenetrable to us really exists. Behind the secrets of nature remains something subtle, intangible, and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion."
"Do not worry about your difficulties in Mathematics. I can assure you mine are still greater."
"If we knew what it was we were doing, it would not be called research, would it?"
"It is the supreme art of the teacher to awaken joy in creative expression and knowledge."
"Peace cannot be kept by force; it can only be achieved by understanding."
"Great spirits have always encountered opposition from mediocre minds. The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly."