Every period of human development has had its own particular type of human conflict — its own variety of problem that, apparently, could be settled o… - Isaac Asimov

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Every period of human development has had its own particular type of human conflict — its own variety of problem that, apparently, could be settled only by force. And each time, frustratingly enough, force never really settled the problem. Instead, it persisted through a series of conflicts, then vanished of itself — what's the expression — ah, yes, 'not with a bang, but a whimper,' as the economic and social environment changed. And then, new problems, and a new series of wars.