“Even in the area where Christianity might be supposed to be vaguely relevant — moral reasoning — it’s casually assumed that Christian belief is an actively disabling factor … Where once politicians who were considering matters of life and death might have been thought to be helped in their decision-making by Christian thinking — by reflecting on the tradition of Augustine and Aquinas, by applying the subtle tests of just-war doctrine — now Christianity means the banal morality of the fairy tale and genuflection before a sky pixie’s simplicities.”