People say to me, "Are you looking for the ultimate "laws of physics?" No, I'm not. I'm just looking to find out more about the world. And if it turns out there is a simple ultimate law that explains everything, so be it. That would be very nice to discover. If it turns out it's like an onion with millions of layers and we're just sick and tired of looking at the layers, then that's the way it is.

But whatever way it comes out, its nature is there and she's going to come out the way she is. And therefore, when we go to investigate it, we shouldn't pre-decide what it is we're trying to do except to find out more about it. If you say, "But your problem is why do you find out "more about it?" If you thought that you were trying to find out more about it because you're going to get an answer to some deep philosophical question, you may be wrong.

It may be that you can't get an answer to that particular question by finding out more about the character of nature. But I don't look at it. My interest in science is to simply find out about the world. And the more I find out, the better it is.