"No burden is so heavy for a man to bear as a succession of happy days."

"The quantum theory is a confirmation of the fact that the world is not a collection of things, but a collection of processes."

"The world is full of wonders, and science is the key to unlocking them."

"When you change your opinion, you are not a weakling. You are a scientist."

"The quantum of action is the universal constant that determines the size of the smallest units of energy."