I found the book "Our Mathematical Universe" by Max Tegmark, a physicist, a pretty good read. His idea is basically that the universe isn't explained by math, it IS math. To get to what he means by that he provides a good review of theoretical physics/cosmology/quantum mechanics. No idea how other physicists think of his work but for someone not in the field who has some interest I thought it was a good overview and even if his ideas are wrong gives you something to think about.