Debate over nuclear policy, whether about nuclear weapons or nuclear energy, most often focuses on issues of the present or the future. The documents in this classic collection remind us, however, that the issues involved have a past. We follow the story of J. Robert Oppenheimer thorough his letters, observations of those close to the Manhattan Project and testimony to the Atomic Energy Commission. President Dwight Eisenhower's 1953 'Atoms for Peace' speech demonstrates how far back calls for nuclear sanity go, and the listing of nuclear-weapons accidents shows how dangerous it may be to ignore those calls.