Joseph McCabe,
The Human Origin of Morals — Chapter II. Evolution and Morals
“ Why is justice the fundamental and essential moral law? It is a vital regulation of social life. Why is murder the greatest crime? It is the gravest social delinquency. And so on. It would be a remarkable coincidence if this mystic law of the philosophers and the theologians, existing before man existed, and surviving when he disappears, just happened to agree so well with the social interests of the observers of the law themselves! ”
