World-wide co-operation with our present technique could abolish poverty and war, and could bring to all mankind a level of happiness and well-being such as has never hitherto existed. But although this is obvious men still prefer to confine co-operation to their own groups and to indulge toward other groups a fierce hostility which fills daily life with terrifying visions of disaster. The reasons for this absurd and tragic inability to behave as everybody's interests would dictate lie not in anything external but in our own emotional nature.
Source: Bertrand Russell : Philosophy for Our Time (1953).
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