"The progress of science depends on the freedom of thought."

"We are here in a position to be able to understand that the human spirit cannot be completely satisfied by science alone."

"The opposite of a shallow truth is a falsehood. The opposite of a profound truth may well be another profound truth."

"Physics is an attempt to describe the world, and it is impossible to describe the world without describing ourselves."

"If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet."