Stephen Hawking — "The universe is a beautiful mystery, and I'm trying to unravel it."

"The downside of my celebrity is that I cannot go anywhere in the world without being recognized. It is not enough for me to wear dark sunglasses and a wig. The wheelchair gives me away."

"Because there is a law such as gravity, the Universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the Universe exists, why we…"

"I believe that we are alone in the universe, but I hope we are not."

"We are all different, but we share the same human spirit. Perhaps it's human nature that we adapt and survive."

"I believe that the universe is governed by the laws of science, and that these laws are absolute."