Carl did not want to believe. He wanted to know.

We batter this planet as if we had someplace else to go.

If you are searching for sacred knowledge and not just a palliative for your fears, then you will train yourself to be a good skeptic.

Knowing a deep thing well, which is what science asks of its practitioners, is an empowerment that is very profound. It's a liberation.

I found that it was easiest to convey the information in the context of the life of the scientist or in the context of our own personal experience, and there was no idea that was too complicated that couldn't be explained clearly and directly.

This planet seems to be in such sorry shape. And I can't ever think about the rest of the universe without coming back home and thinking what the implications for life here would be if we were to really have some definitive proof of extraterrestrial life.

A lot of people have this ego need that makes them want to believe that Earth is the center of the universe and humans are the most important species, the supreme expression of creation.