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Rating: 
Summary: A unique perspective by a unique man
Review: I presume I do not need to introduce Schwinger's list of credentials, including a nobel prize for QED alongside with Feynman and the third guy (I'm sorry, I never seem to remember his name). Schwinger has always had his own view of physics, much like Feynman, and in his books he usually follows that view. The consequence is a book on an old subject, such as QM, which includes many new viewpoints and ideas not found in other books, especially in use of action principles, of which Schwinger was a major proponent.That being said, it should be stressed that you should not approach this book without taking a course or two in QM - Schwinger himself states so at the introduction. It would not only make the book hard to follow, but also make it pointless - the whole idea of reading this book is getting a fresh new perspective on QM. For example, instead of stating the "axioms" of QM, Schwinger decides to examine physical experiments and try to see where these axioms come from. He is not always successful in doing that, but at the very least he should get every faithful reader to deeply ponder the foundations of QM. Instead of just writing down Schroedinger's equation and saying, "this is how our system evolves in time", he decides to take an action principle as his fundamental rule for time evolution and derive Schroedinger's equation from it. In short, he turns QM upside down - and gets away with it. It is definitely worthwhile checking out this book, although many will not like the idea of doing things Schwinger's way - in a sense, the book's greatest strength is also its greatest weakness. You have been warned.
Rating: 
Summary: The Perfect Way to Do Quantum Mechanics
Review: Schwinger has presented in the text the perfect way to do Quantum Mechanics. It is actually transformed from lecture notes given by him for three quarters at UCLA in the mid-1980s. Just look at how he induses the general structure of quantum kinematics and establishes the dynamical principle - his quantum action principle, you would agree with me that it should be on the shelf of every physist, physics teacher and student.
Rating:
Summary: The Perfect Way to Do Quantum Mechanics
Review: Schwinger has presented in the text the perfect way to do Quantum Mechanics. It is actually transformed from lecture notes given by him for three quarters at UCLA in the mid-1980s. Just look at how he induses the general structure of quantum kinematics and establishes the dynamical principle - his quantum action principle, you would agree with me that it should be on the shelf of every physist, physics teacher and student.
Rating:
Summary: Great read!
Review: This is how quantum mechanics ought to be written and studied. By reading this book you will be learning from a true master!
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