"We spend the first year of a child's life teaching it to walk and talk and the rest of its life to shut up and sit down."

"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."

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

"The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence."

"The universe is not obliged to be beautiful to you. It just is."