That's what makes a human a human, if we store information outside our bodies.

It is my mission to change the world. I'm not kidding: Make no small plans, dream mighty things. I feel if we get enough people engaged in climate change, we will get enough people to change the world. We will revolutionize the way we produce electricity and provide clean water to people.

When or if answers are found, you can be assured those answers will lead to more questions. Is the troubling or wonderful? It depends on your view of your place in nature, your place among the stars; I suppose.

We are special in the sense that we can know our place in the cosmos. We can know our place in space. We are at least one of the cosmos's ways of knowing itself. That fills me with reverence and joy. Another insight I really want people to consider is this: everyone has gotten this far. Everyone you meet has made it this far. Nobody is superior to anyone else from an evolutionary standpoint.

The Big Bang banged, and for some reason we’re here. And that’s astonishing. And that we can understand that, that’s the most astonishing.

Hard to find anything lovelier than a tree. They grow at right angles to a tangent of the nominal sphere of the Earth.

From an evolutionary standpoint you can't just wipe everything out and start over, and I don't think you can do it in the school system either.