Stephen Hawking — "I think the universe is a lot stranger than we can imagine."

"I think that the universe is a beautiful and complex place, and I'm very lucky to be able to study it."

"The ultimate goal of science is to provide a single theory that describes the whole universe."

"So next time someone complains that you made a mistake, tell him that may be a good thing. Because without imperfection, neither you nor I would exist."

"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."

"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."