In the New Testament, Thomas Jefferson cut out everything that was mystical, magical, miracle - physically with scissors - and then pasted in all that remained, such as Jesus's Sermon on the Mount.

I've said multiple times that the world's first trillionaire is going to be the person who exploits the resources of asteroids, the natural resources that are rare on earth and common on selected asteroids. So there are many different reasons you might want to go into space. You might want to spend your honeymoon on the far side of the moon.

I never got into 'Star Wars.' Maybe because they made no attempt to portray real physics. At all.

Deep in the world of atomic nuclei, life is not always tranquil.

If you find life on Europa [Jupiter's moon], like, what would you call it? Would it be, like, Europeans?

I'm not writing for myself. I'm writing as an educator, I'm writing to stimulate others.

Our five senses are faulty data-taking devices, and they need help.