On a purely quantitative basis, it is more wicked to kill ten thousand by hurling an artillery shell into a town, than to kill one man by pommeling him with a stone, yet the latter is by far the more psychologically difficult act. Distance, time, and physical barriers neutralize the moral sense. There are virtually no psychological inhibitions against coastal bombardment or dropping napalm from a plane twenty thousand feet overhead. As for the man who sits in front of a button that will release Armageddon, depressing it has about the same emotional force as calling for an elevator. While
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