When in our long history as Homo sapiens were we most fulfilled? As hunter-gatherers chasing down mammoths? As farmers tilling the soil? Maybe as God-fearing peasants in the Middle Ages? Who are we as a species? And where are we going? - Bill Gates
O que possibilitou ao Homo sapiens subjugar as demais espécies? O que nos torna capazes das mais belas obras de arte, dos avanços científicos mais impensáveis e das mais horripilantes guerras?