"People think I'm really smart. But when people ask me a question I type in the answer on my little computer screen. How do you know I am not just googling that shit before I answer?"

"Although the chance of a disaster to planet Earth in a given year may be quite low, it adds up over time, and becomes a near certainty in the next thousand or 10 thousand years."

"I have lived with the prospect of an early death for the last 49 years. I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first."

"The greatest achievement of the human race would be to understand the universe."

"I would like to understand the mind of God, if there is one."