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  • If evolution and the survival of the fittest be true at all, the destruction of prey and of human rivals must have been among the most important. . . . It is just because human bloodthirstiness is such a primitive part of us that it is so hard to eradicate, especially when a fight or a hunt is promised as part of the fun.

    William James (1918). “The Principles of Psychology, Vol. 2”, p.412, Courier Corporation