I've been drooling over it in the bookshop this last couple of weeks, and finally yesterday I bought it. amazon link A monumental book, over 1000 pages, subtitled: "A Complete Guide to the Laws of the Universe" haha It has a lot of very heavy math in it. But he writes so well about it; I think it's much better than the "sweep under the carpet" trick that the usual pop-sci theory of the universe books use. And there are plenty of good diagrams to back up the concepts. He even uses very interesting looking hieroglyphics for some of the tensor equations (I've never seen these in the text books!) I love reading physics from someone who expects "further changes of direction [in physics] greater even than those of the last century." Wow. Simon.