I’m very, very reluctant to get embroiled into this discussion, but, for what it’s worth, it does appear there is, so to speak, an ‘altruism gene’. Of course, I understand the argument (even if I don’t share it) that the moral code of those without a belief in God rests on shaky philosophical foundations, but, even if this is a matter of instinct rather than logic, biology, as always, may go some way to coming to the rescue.