Science is a philosophy of discovery. Intelligent design is a philosophy of ignorance. You cannot build a program of discovery on the assumption that nobody is smart enough to figure out the answer to a problem.

In the end, it's the people who are curious who change the world.

Einstein's theory, we know that it fails. In advance, we know it fails. So that a deeper understanding of nature is awaiting us.

In the first year of a child's life we teach them to walk and talk. And then for the rest of their lives we want them to sit down and be quiet.

Something we all have as kids and is beaten out of us as adults. Parents come up to me, "How do I get my kids interested in science?" They're already interested in science. Just stop beating it out of them.

If you seek only easy problems to solve, then ultimately, there'll be nothing about you to distinguish yourself from others.

In astrophysics, we care about how matter, motion and energy manifest in objects and phenomenon in the universe. Stars are born. They live out their lives. They die. Some of the ones that die explode. Our sun will not be one of those, but it will die. And it'll take Earth with us. So we make sure we have other destinations in mind when that happens. And I've got it on my calendar.