Wanna lose 1200 Calories a month? Drink a liter of ice water a day. You burn the energy just raising the water to body temp.

I've accomplished enough in life so that I do not fear death.

Who you are, where you've been and what you've done is all up here, captured and preserved in your memories. If you lost that - the story of your own origins - you'd lose your identity, your sense of self.

I object to religion in science classrooms not because it's religion but because it's not science.

Extreme skepticism and extreme gullibility are two equal ways of not having to think at all. And I don't think I'm the first to say that.

The center line of science literacy - which not many people tell you, but I feel this strongly, and I will go to my grave making this point - is how you think.

Nothing is a thing: it's nothing. So I can imagine a place where there's not even nothing.