"I am enough of an artist to draw freely upon my imagination."

"The world is a mystery, and the more we learn, the more mysterious it becomes."

"The world is full of wonders, and it is our task to explore them."

"We are told such a number as the square root of 2 worried Pythagoras and his school almost to exhaustion. Being used to such queer numbers from early childhood, we must be careful not to form a low id…"

"The greatest change will be in the thinking habits of the human race. It will learn to look at things in a new way. Quantum theory will force it to do so."