Great food for thought about the Buddha's teachings. Deceptively simple, yet it completely overturns the great majority of religions' (Buddhism included!) claims to the "truth".
Gil does a great job explaining that much of the Who, When, and Where's of the book isn't really known. Having said that, he provides context for the writings and illuminates the more esoteric ideas by relating them to other common vedic ideas that were floating around at the time.
I found the book to be both facsinating on a scholarly level and inspiring on a personal level. Definitely worth a read!