Knowledge is the key that unlocks all the doors. You can be green-skinned with yellow polka dots and come from Mars, but if you have knowledge that people need, instead of beating you, they'll beat a path to your door.

You should see the eyes of some of those children when I say to them we're going to have to open your head up and take out this tumor. They're not happy about it, believe me. And they don't like me very much at that point. But later on, they love me.

Knowledge makes people special. Knowledge enriches life itself.

Evolution and creationism both require faith. It's just a matter of where you choose to place that faith.

I always say if God didn't allow any bad things to happen we would already be in heaven, and we are not there.

It's ridiculous that our solar system, not to mention the universe outside of that, is extraordinarily well organized, to the point where we can predict 70 years away when a comet is coming.

The point is, we can decry the dangers we face or ignore them or even allow ourselves to be paralyzed by fear.