Well, I thought I understood quantum theory, but relativity, it was something that I had not worked in, Curved Space. And the best way to learn something is to have to teach it. So I asked the permission of the chairman of the physics departments, Allen Shenstone, to teach one course, a graduate course, beginning in the fall. That was a wonderful learning experience. And little by little, the material that came out of that and subsequent courses went into the making of a book. And Kip Thorne and Charlie Misner, who had been in that course at one point or another and had given similar courses themselves, helped translate that idea of a book, into a book, which today is so thick that it's popularly known as "The Telephone Book". But, to boil it all down, I put out a much shorter book a few years ago called "A Journey into Spacetime and Gravity", where I put the whole theme of it in these simple words: Space-time tells mass how to move, and mass tells space-time how to curve. Well, I wish I could say quantum physics in equally simple terms. I have not now the opportunity to give a course because I have reached the age of being a 'dodunk'. But I've agreed to do an article, the deadline of which has already passed, but I'm still hoping to get it down and published as a first crack at quantum theory. But someday, I hope that the idea can be said equally simply. If I had to confess, under torture, right now, what I think the simple idea is, I would say it's that we ourselves generate the world, the world is self-generated, but it may well be absolutely wrong.