"It's now been 35 years since the first atomic bomb fell on Hiroshima. The great majority of the world's people cannot remember a time when the nuclear shadow did not hang over the Earth. Our minds have adjusted to it, as after a time our eyes adjust to the dark. Yet the risk of a nuclear conflagration has not lessened. It has not happened yet, thank God, but that can give us little comfort, for it only has to happen once. The danger is becoming greater. As the arsenals of the superpowers grow in size and sophistication and as other governments, perhaps even in the future dozens of governments, acquire these weapons, it may only be a matter of time before madness, desperation, greed, or miscalculation lets loose this terrible force. In an all-out nuclear war, more destructive power than in all of World War II would be unleashed every second during the long afternoon it would take for all the missiles and bombs to fall. A World War II every second—more people killed in the first few hours than in all the wars of history put together. The survivors, if any, would live in despair amid the poisoned ruins of a civilization that had committed suicide."