Some actions and activities have been universally condemned throughout the whole of recorded history. We know of no society where theft and murder by individuals were regarded as acceptable. In the same way, the cheating of customers by merchants has always been viewed as reprehensible. Telling lies and having sexual relations with somebody else’s husband or wife have also been the subject of both legal prohibition and social disapproval throughout history. By contrast slavery, the ownership of human beings and their purchase and sale as though they were no more than domestic animals, has
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