To try to really land a spacecraft really on another world is really difficult, and if we lose that ability, it's going to be heartbreaking.

Everyone you will ever meet knows something you don't.

We are just a speck, on a speck, orbiting a speck, in the corner of a speck, in the middle of nowhere.

To leave the world better than you found it, sometimes you have to pick up other people's trash.

Science is the best idea humans have ever had. The more people who embrace that idea, the better.

You and I are made of stardust. We are the stuff of exploded stars. We are therefore, at least 1 way that the Universe knows itself. That, to me, is astonishing.

There's nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind.

I speak with dogs frequently. They don't really talk, but I feel they're communicating.

The natural world is a package deal; you don't get to select which facts you like and which you don't.

The more you find out about the world, the more opportunities there are to laugh at it.

Science is the best thing humans beings have ever come up with. And if it isn't, science will fix it.

A Christian is a perfectly free lord of all, subject to none. A Christian is a perfectly dutiful servant of all, subject of all, subject to all.

Being creative, joyful, happy, and beloved are the ultimate purposes of a profound life.

Kent steepled his fingers in consideration. Blood-red rubies flashed in the sunlight, like the eyes of a demon clutched in his hands.

I had this wonderful career and thought I would retire as a teacher.

I feel that one species, mankind, doesn't have the right to exterminate

I didn’t feel that there was much goodness in me.

When will my reflection show who I am inside?

Winds are advertisements of all they touch, however much or little we may be able to read them; telling their wanderings even by their scents alone.

The difference between a cult and a religion is one outlasts its leader.