Love what you do and do what you love.

The best scientist is open to experience and begins with romance - the idea that anything is possible.

You can’t learn to write in college. It’s a very bad place for writers because the teachers always think they know more than you do-and they don’t. They have prejudices.

Stuff your eyes with wonder.

Don't they get afraid, then?" "They have a religion for that.

We've let too much time go by. We've been busy with war instead of being busy with peace. And that's what space travel is all about. It's all about peace and exploration and wonder and beauty.

I take this continent with me into the grave.