J. Robert Oppenheimer is one of Clay Jenkinson’s more recent characters. J. Robert Oppenheimer was the father of the atomic bomb. He was an enormously complex man. After making important contributions to the science of Quantum Physics, he was chosen by General Leslie Groves to head up the Manhattan Project in 1942. He performed this monumental task with great administrative genius. But the world’s first atomic detonation, at Trinity, New Mexico, on 16 July 1945 awakened in J. Robert Oppenheimer deep misgivings about his achievement, and about the marriage of physics and government. Because he was lukewarm on the development of the hydrogen bomb, and because of some questionable pre-war contacts with American members of the communist party, J. Robert Oppenheimer was destroyed by the Cold Warriors in 1954. His security clearance was revoked. He was accused wrongly with being a traitor. He was vindicated in 1963. Clay Jenkinson considers J. Robert J.Robert Oppenheimer the epitome of Twentieth Century Man.