The author trained with Bruce Lee.Amazon reviewer: First off, I do not agree with all the techniquespresented in this manual and I think his position on carrying a knifeand gun is also wrong; nevertheless, I highly recommend this dated butstill very good book. In my long career as both a student and instructorI have read and researched 100s of books on the martial arts andself-defense. If you are sincerely interested in merely learningpractical self-defense without having to study years training in along-term traditional martial art, this is one of the very best books(Playboy’s Book of Practical Self-Defense by Joe Hyams) on practicalself-defense techniques. Do not be turned off by the title (Playboy).They published the book, which I believe may now be out of print.Contains advice on the the Law of Self Defence from Johnnie Cochran, who at the time worked as a prosecutor in Los Angeles.