Since the savage man’s body is the only instrument he knows, he employs it for a variety of purposes that, for lack of practice, ours are incapable of serving. And our industry deprives us of the force and agility that necessity obliges him to acquire. If he had had an axe, would his wrists break such strong branches? If he had had a sling, would he throw a stone with so much force? […] Give a civilized man time to gather all of his machines around him, and undoubtedly he will easily overcome a savage man. But if you want to see an even more unequal fight, pit them against each other naked and disarmed, and you will soon realize the advantage of constantly having all of one’s forces at one’s disposal, of always being ready for any event, and of always carrying one’s entire self, as it were, with one.