I struggled with this book at first, but something clicked into place around Chapter 3 or so, and now I’m blasting through it, and when I’m not reading it I can’t wait to get back to it. A detailed piece of work, meticulously researched, and written in an easy to read prose style. Full of fantastic moments from Oppenheimer’s life, the small incidents of a life, as well as the grand scale of historic events. A who’s who of the early days of particle physics.