The title of Teller's book makes it sound as though it too is about SDI, and so it is in part. But its 30 short essays, about half of them published before, range across Teller's life, work and philosophy. His sketches of the famous physicists with whom he has worked are engaging. The book displays no shortage of ego, but if it will not change the minds of his detractors, it does provide insight into a man who has had a profound impact on the shape of weaponry in this century.