"We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special."

"We are all visitors to this planet. We are here for a short time, and we must make the most of it."

"I don't think the human race will survive the next thousand years, unless we spread into space."

"The universe is a place of endless possibilities, and we are just beginning to explore them."

"Finally, a question about something important. My advice to any heartbroken young girl is to pay close attention to the study of theoretical physics. It would not be beyond the realms of possibility t…"