We Can Always Take But Never Give.

We Are At A Crossroads In Human History. Never Before Has There Been A Moment So Simultaneously Perilous And Promising. We Are The First Species To Have Taken Evolution Into Our Own Hands.

In The Deepest Sense The Search For Extraterrestrial Intelligence Is A Search For Ourselves.

There Are Wonders Enough Out There Without Our Inventing Any.

Nobody Listens To Mathematicians.

My Parents Were Not Scientists. They Knew Almost Nothing About Science. But In Introducing Me Simultaneously To Skepticism And To Wonder, They Taught Me The Two Uneasily Cohabiting Modes Of Thought That Are Central To The Scientific Method.