One can't teach a cat not to catch birds

Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted.

If God has created the world, his primary worry was certainly not to make its understanding easy for us

If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.

God has given me a mule-like stubbornness to stick with a difficult problem and the intuitive powers to conceptualize complex hypothetical situations in my mind.

Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but does not bring us any closer to the secrets of the "Old One." I, at any rate, am convinced that He is not playing at dice.

God casts the die, not the dice.