"I have spent my life traveling across the universe, inside my mind."

"One day, I hope to have a conversation with an alien."

"The fact that we humans, who are ourselves mere collections of fundamental particles, have been able to come this close to an understanding of the laws governing us and our universe is a great triumph…"

"The universe is a giant puzzle, and I'm trying to put the pieces together."

"There are no black holes in the sense of a region of spacetime from which nothing can escape. Instead, there are apparent horizons which persist for a time and then vanish."