"Puritanism and paganism — the repression and the expression of the senses and desires — alternate in mutual reaction in history. Generally religion and puritanism prevail in periods when the laws are feeble and morals must bear the burden of maintaining social order; skepticism and paganism (other factors being equal) progress as the rising power of law and governments permits the decline of the church, the family, and morality without basically endangering the stability of the state."