Earlier generations of stars in the galaxy could well have had planets. But really, there was only hydrogen and helium to work with, so they'd all be gas giants and not small, rocky planets.

We, all of us, are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from.

Ultimately, we actually all belong to only one tribe, to Earthlings.

The story of humans is the story of ideas that shine light into dark corners.

SETI is a mirror, a mirror that can show ourselves from an extraordinary perspective and can help to trivialize the differences among us.

We don't know how to identify intelligence over interstellar distances, so what we do instead is use technology for a proxy.

The most dangerous enemy is that which no one fears.

She is truly beautiful, but she doesn't have a beautiful face to match her beautiful heart. True beauty lies in the HEART.

I am a writer of books in retrospect. I talk in order to understand

Vocation is different from talent. One can have vocation and not have talent

Nobody, I mean nobody, puts ketchup on a hot dog.

I think that if you can turn off the mind and look only with the eyes, ultimately everything becomes abstract.

If you're talking about entrepreneurs in conflict and post-conflict settings, then you must talk about women, because they are the population you have left.

I would love to play Wonder Woman; I have the abilities and the strength because I am definitely not the typical Hollywood actress.

Surely it's time for climate-change deniers to have their opinions forcibly tattooed on their bodies.

It is not fun singing about losing somebody like that, but at the same time it was easy to write because the memories were so real and vivid and so much a part of who I am.