Given that religious faith is an intrinsic element of human experience, it is best to approach and engage the subject with a sense of history and a critical sensibility.

It's possible that the 2012 general-election race will be the least overtly religious one since 1972, the last campaign before Roe v. Wade and the rise of Jimmy Carter brought evangelicalism into the political mainstream. That's because faith remains a complicated issue for Obama, who is still wrongly thought to be a Muslim in some quarters.

While we remain a nation decisively shaped by religious faith, our politics and our culture are, in the main, less influenced by movements and arguments of an explicitly Christian character than they were even five years ago. I think this is a good thing - good for our political culture.

I am an Episcopalian who takes the faith of my fathers seriously, and I would, I think, be disheartened if my own young children were to turn away from the church when they grow up. I am also a critic of Christianity, if by critic one means an observer who brings historical and literary judgment to bear on the texts and traditions of the church.

As crucial as religion has been and is to the life of the nation, America's unifying force has never been a specific faith, but a commitment to freedom - not least freedom of conscience.