"The human race is just a chemical scum on a moderate-sized planet, orbiting around a very average star in the outer suburb of one among a hundred billion galaxies."

"We are all time-travelers, heading into the future at the rate of one second per second."

"Meeting an advanced civilization could be like Native Americans encountering Columbus. That didn't turn out so well."

"I have often been asked: What do you think about God? I have said that we cannot know for sure whether God exists or not. But I don't believe in a personal God."

"The universe is not only stranger than we imagine, it is stranger than we can imagine."