It is my view that the simplest explanation is there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization. There is probably no heaven, and no afterlife either. We have this one life to appreciate the grand design of the universe, and for that, I am extremely grateful.

Scientists tend to risk theories they admire

However difficult life may seem, there is always something you can do and succeed at.

Life would be tragic if it weren't funny.

A million million million million (1 with twenty-four zeros after it) miles, the size of the observable universe.

I used to think information was destroyed in black hole. This was my biggest blunder, or at least my biggest blunder in science.

The downside of my celebrity is that I cannot go anywhere in the world without being recognized. It is not enough for me to wear dark sunglasses and a wig. The wheelchair gives me away.