"The standard work in the fundamental principles of quantum mechanics, indispensable both to the advanced student and to the mature research worker, who will always find it a fresh source of knowledge and stimulation." --Nature "This is the classic text on quantum mechanics. No graduate student of quantum theory should leave it unread"--W.C Schieve, University of Texas
Not light reading. If you have a big ego prepare to be humbled. I read somewhere be that Einstein wrote a colleague that he couldn't understand Dirac. Perhaps he was joking, but not necessarily. Brilliant. I've written and read much math and science and to me this is first rate. And it's even richer if you read up on his life story.