The problem for those who assert biblical authority in support of traditional definitions of marriage is that one could, with equal validity, assert that the lending of money or certain kinds of haircuts are forbidden by God, or that slavery and the subjugation of women are authorized by the Lord.

If a person is homosexual by nature - that is, if one's sexuality is as intrinsic a part of one's identity as gender or skin color - then society can no more deny a gay person access to the secular rights and religious sacraments because of his homosexuality than it can reinstate Jim Crow.

A wise nation should cultivate a political spirit that allows opponents to cooperate without fearing an automatic execution from their core supporters. Who knew that the real rogues in American politics would be the ones who dare to get along?

It would be great if politics were fact-based, but it is not, and it is surely not nuance-based. What works in a classroom or a think tank does not work on Capitol Hill or in the White House. Obama sometimes seems to be running the Brookings Institution, not the country.

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.