It is necessary for the welfare of society that genius should be privileged to utter sedition, to blaspheme, to outrage good taste, to corrupt the youthful mind, and generally to scandalize one's uncles.
Christianity as a specific doctrine was slain with Jesus, suddenly and utterly. He was hardly cold in his grave, or high in his heaven (as you please), before the apostles dragged the tradition of him down to the level of the thing it has remained ever since.