"My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all."

"We are all time-travelers, heading into the future at the rate of one second per second."

"I don't think anyone would take me f---ing seriously if I sounded like that."

"I want to know why the universe exists, why there is something rather than nothing."

"I regard the brain as a computer which will stop working when its components fail. There is no heaven or afterlife for broken-down computers; that is a fairy story for people afraid of the dark."