Top positive review
I consider this to be the best textbook for an introductory graduate course
Reviewed in the United States on May 18, 2020
In my opinion, this is the best quantum field theory (QFT) book you want to learn from. If you are already an expert, there are better reference books for sure (and I own several of those.) However, I am not aware of a better book more suitable for a one-year introductory graduate course. (The class will probably will cover slightly more than half of the contents during that time.) Ideally, the entire book should be a four semester (or five or six quarter) course.
It is neither too dry too mathematical and abstract, nor is it superficial, telling you things what they are without a detailed explanation. You will find many other books on QFT which will cover a specific topic better than Schwartz does. But overall, I have not seen one that is better rounded and better organized for the benefit of the student than this one. The focus of the book is the student, not a demonstration of the virtuosity of the author. This is clearly not meant to be a reference book, but equally clearly it makes an excellent text-book. For a yearlong introductory class on QFT, I highly recommend it.