Over the past few months, I have been debating Roman Catholics who differ from their Eastern Orthodox brethren on the nature of the Trinity, Protestants who are willing to quarrel bitterly with one another about election and predestination, with Jews who cannot concur about a covenant with God, and with Muslims who harbor bitter disagreements over the discrepant interpretations of the Quran. Arcane as these disputes may seem, and much as I relish seeing the faithful fight among themselves, the believers are models of lucidity when compared to the hair-splitting secularists who cannot accept that al-Qaida in Mesopotamia is a branch of al-Qaida itself.

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