"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."

"I believe that the human race has a great future ahead of it, if we can avoid destroying ourselves."

"One of the basic rules of the universe is that nothing is perfect. Perfection simply doesn't exist....Without imperfection, neither you nor I would exist."

"We are very, very small, but we are capable of understanding the universe."

"The universe is a cruel, uncaring void. The key to being happy isn't to search for meaning. It's to just keep yourself busy with unimportant nonsense, and eventually, you'll be dead."