All this is an assumption of fact unsupported by evidence; but quite the contrary, as we can see by an examination of the law in question. Whatever may have been the date of the establishment of the cities of refuge, I suppose that it will not be seriously denied that the law of the covenant as laid down in Exodus XX, 1, Numbers XXXV, 6, is at least as old as the age of Moses, in principle, if not in words; and this legal principle is quite inconsistent with, if not directly antagonistic to, all the prejudices and regulations, moral, religious, or civil, of a pure nomadic society, since it presupposes a social condition which, if adopted, would be fatal to a nomad society. The true nomad knows no criminal law save the law of the blood feud, which is the law of revenge, and which prevailed among the Hebrews much earlier. In the early Saxon law it was expressed by the apothegm “_Factum reputabitur pro volunte_.” The act implies the intent. That is to say, the tribe is an enlarged family who, since they have no collective system of sovereignty which gives them common protection by an organized police, and courts with power to enforce process, have no option but to protect each other. Therefore, it is incumbent on each member of the tribe or family to avenge an injury to any other member, whether the injury be accidental or otherwise; and to be himself the judge of what amounts to an injury. Such a condition prevailed among the Hebrews at a very early period; “And God blessed Noah and his sons, and said unto them: ... at the hand of every man’s brother will I require the life of man. Whoso sheddeth man’s blood, by man shall his blood be shed.” [Footnote: Gen. IX, 1, 5, 6.] These customs and the type of thought which sustain them are very tenacious and change slowly. Moses could not have altered the nomadic customs of thought and of blood revenge, had he tried, more than could Canute. It would have been impossible. The advent of a civilized conception of the law is the work of centuries as the history of England proves.