From TED

Frans de Waal shares some surprising videos of behavioural tests on primates and other mammals, which show how many moral traits like empathy and cooperation all of us share. Talk recorded 4 November 2011.

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If you ask anyone, what is morality based on? These are the two factors that always come out: One is reciprocity … and a sense of fairness, and the other one is empathy and compassion.

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