"The universe is a symphony of strings, and the mind is an instrument that can play them."

"If you're religious, you already have a book of answers. The problem is, it's not a book of questions."

"I don't believe in magic. I believe in physics."

"The universe is not a clock. It's a living organism."

"Earth is a small planet, and we are not alone. We are not alone in the universe, and we are not alone on this planet."