Garrett Lisi first got some attention a couple years ago with an interesting idea about unified field theory and the mathematical entity known as E8. Recently I read a book called Symmetry And The Monster about Lie Groups the creation of the Atlas, and E8. Not that well written (always saying 'and later we'll get back to that' and never do), but incredibly interesting subject. And I will never be able to do the math. Ever. But the concepts, maybe... Although it might be more like the Bohr quote If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.