Simple enough for students, comprehensive enough to serve as a reference for professionals. Subjects include formalism and its interpretation, an analysis of simple systems, symmetries and invariance, methods of approximation, elements of relativistic quantum mechanics, much more. "Strongly recommended." — American Journal of Physics.
We used a lot of books in our graduate QM classes, and this was one of the three or four best. It's a massive tome, a long and comprehensive treatment of the various aspects of quantum mechanics. I have nothing useful to say about it except that it is clearly written, detailed where it needs to be, thoroughly discusses and explores complex ideas, and serves as an outstanding reference for practicing physicists.