It had been formerly asserted by theologians that our moral laws were given to man by a supernatural intuitive process. However, Professor E. A. Westermarck's "Origin and Development of the Moral Ideas," and similar researches, give a comprehensive survey of the moral ideas and practices of all the backward fragments of the human race and conclusively prove the social nature of moral law. The moral laws have evolved much the same as physical man has evolved. There is no indication whatsoever that the moral laws came from any revelation since the sense of moral law was just as strong amongst civilized peoples beyond the range of Christianity, or before the Christian era. Joseph McCabe, commenting on Professor Westermarck's work states, "All the fine theories of the philosophers break down before this vast collection of facts. There is no intuition whatever of an august and eternal law, and the less God is brought into connection with these pitiful blunders and often monstrous perversions of the moral sense, the better. What we see is just man's mind in possession of the idea that his conduct must be regulated by law, and clumsily working out the correct application of that idea as his intelligence grows and his social life becomes more complex. It is not a question of the mind of the savage imperfectly seeing the law. It is a plain case of the ideas of the savage reflecting and changing with his environment and the interest of his priests." Justice is a fundamental and essential moral law because it is a vital regulation of social life and murder is the greatest crime because it is the greatest social delinquency; and these are inherent in the social nature of moral law. "Moral law slowly dawns in the mind of the human race as a regulation of a man's relation with his fellows in the interest of social life. It is quite independent of religion, since it has entirely different roots in human psychology." (_Joseph McCabe: "Human Origin of Morals."_) In the mind of primitive man there is no connection between morality and the belief in a God. "Society is the school in which men learn to distinguish between right and wrong. The headmaster is custom and the lessons are the same for all. The first moral judgments were pronounced by public opinion; public indignation and public approval are the prototypes of the moral emotions." (_Edward Westermarck: "Origin and Development of the Moral Ideas."_)