Despite such gymnastics, Ruse’s attempt at a reconciliation ultimately fails – not surprisingly, given that it requires us to accept a version of Darwinism so extreme that it has practically no adherents, and a form of Christianity that would appal most theologians and churchgoers.

He begins by defining his terms. A ‘Darwinian’ is someone who believes that life had a natural origin, that existing species evolved from earlier forms and are related by descent from common ancestors, and that the main engine of evolution is natural selection. Ruse makes no bones about accepting Darwinism: ‘I think that evolution is a fact and that Darwinism rules triumphant.’ The brand of Christianity that must be merged with it is fairly conservative, and includes the view that humans, made in God’s image, were ‘the focus and purpose of creation’. Subsequently tainted by original sin, they were brought to salvation by the crucifixion of Jesus, the son of God, who was born to a virgin. Ruse sticks to the New Testament view of God as ‘an all-powerful creator who acts out of pure love’. Such a faith entails accepting miracles, though they obviously cause him some discomfort.

Christians have good reason to feel uncomfortable about Darwinism. The fossil record shows that the Genesis version of creation is manifestly wrong if read literally, and one is left either questioning the authority of the Bible or recognising that it is a prolonged exercise in metaphor – and as such open to endless interpretation. Moreover, it is difficult for a committed Darwinist to view humans, who form one side branch of the primate lineage, as the principal object of creation.