"If we would understand the atom, we must be able to describe it in its totality, and not merely in its parts."

"The goal of science is to make sense of the world, not to explain it away."

"The atom is a tiny planetary system. The electrons revolve around the nucleus just as the planets revolve around the sun."

"Never talk faster than you think."

"The task of science is both to extend the range of our experience and to reduce it to order."