races which still inhabit the earth and who are certainly closer to primitive man than we, act differently in this respect, or have so acted as long as they did not yet feel the influence of our civilization. The savage, such as the Australian, the Bushman, or the inhabitant of Terra del Fuego, is by no means a remorseless murderer; when he returns home as victor from the war path he is not allowed to enter his village or touch his wife until he has expiated his war murders through lengthy and often painful penances. The explanation for this is, of course, related to his superstition; the savage fears the avenging spirit of the slain. But the spirits of the fallen enemy are nothing but the expression of his evil conscience over his blood guilt; behind this superstition there lies concealed a bit of ethical delicacy of
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