It's not that I'm so smart.

Every one who is seriously involved in the pursuit of science becomes convinced that a spirit is manifest in the laws of the Universe-a spirit vastly superior to that of man, and one in the face of which we with our modest powers must feel humble.

The splitting of the atom has changed everything except for how we think.

It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing...

Science has brought forth this danger, but the real problem is in the minds and hearts of men.

Everything has changed except the way man thinks (when the hydrogen bomb was exploded)

What a deep faith in the rationality of the structure of the world and what a longing to understand even a small glimpse of the reason revealed in the world there must have been in Kepler and Newton to enable them to unravel the mechanism of the heavens in long years of lonely work!