"The nuclear arms race is like two sworn enemies standing waist-deep in gasoline, one with three matches, the other with five."

"The brain is a very big place in a very small space."

"A book is made of paper, ink, and a little imagination."

"We make our world significant by the courage of our questions and the depth of our answers."

"If you want to make an apple pie from scratch, you must first invent the universe."