We all have a thirst for wonder. It's a deeply human quality. Science and religion are both bound up with it. What I'm saying is, you don't have to make stories up, you don't have to exaggerate. There's wonder and awe enough in the real world. Nature's a lot better at inventing wonders than we are.

A book is proof that humans are capable of working magic.

The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.

After the earth dies, some 5 billion years from now, after it's burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being - and they will know nothing of a place once called Earth.

We are like butterflies who flutter for a day and think it is forever.

We are made of star-stuff. Our bodies are made of star-stuff. There are pieces of star within us all.

In a complex universe, in a society undergoing unprecedented change, how can we find the truth if we are not willing to question everything and to give a fair hearing to everything?