Our own civilization has a dubious future, and if we can express the reason in brief it is that we find it difficult (perhaps impossible) to cooperat… - Isaac Asimov

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Our own civilization has a dubious future, and if we can express the reason in brief it is that we find it difficult (perhaps impossible) to cooperate in solving our problems. We are too contentious a species and apparently find our local quarrels to be more important than our overall survival.