There are as many atoms in each molecule of your DNA as there are stars in the typical galaxy. This is true for dogs, and bears, and every living thing. We are, each of us, a little universe.

I bet most of the crowd does not know that there are six moons in the solar system bigger than Pluto.

You can't be a writer and have nothing to write about. You have to have life experiences.

I have yet to see a successful prediction about the physical world that was inferred or extrapolated from the content of any religions document.

It is astonishing to realize that until Galileo performed his experiments on the acceleration of gravity in the early seventeenth century, nobody questioned Aristotle's falling balls. Nobody said, Show Me!

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

We're quite happy with our Big Bang description of cosmic origins. But actually, the Big Bang accounts for what happened only after the beginning. The beginning itself, and especially what happened before, remains the biggest mystery of all.