I've been looking for a book like this for many years as it provides exactly what I need.<br><br>Some reviewers have said this book appeals to a narrow audience, and they may be right. Get this book if:<br>- You learned maths at least to senior high school / basic university engineering/science level.<br>- You're interested in understanding quantum mechanics at a deeper and more mathematical degree than you get in popular science books and want to be able to work with the basic postulates and mathematics of quantum mechanics.<br>- You find existing text books that cover quantum theory (like Bohm, Rae) go too deep and are basically inaccessible.<br><br>The book is very readable, and though it takes you through derivations of Schrodinger's equation, working with vector spaces, statistical physics, it's never dry and doesn't assume to know too much to begin with.<br><br>My only criticism is that it tries to be jokey with pointless dialogue at the beginning of chapters, but being one of the few books that successfully bridge the gap between popular science books and text books, it earns its 5 stars.