Denys Turner’s attractive argument for the compatibility, nay the virtual identity, of Marxism and Christianity (New Blackfriars, June 1975) is excellent as far as it goes, and I have little to quarrel with in it. But this is because it doesn’t go very far. So I’d like to press him to go on to the next step.

Marxism and Christianity are at one—indeed, are one—because each affirms that it is only by means of revolutionary socialist praxis that a community of human love can be attained, through the overturning of the capitalist system of human exploitation which for us in the present era is the incarnation of everything which is opposed to such love. All right: but then I have to ask myself am I a practising Marxist or only a sham Marxist? A practising Christian or only a sham Christian? Until some objective criteria have been established by which I can judge my own praxis, nothing has been done to help me except to juggle with words. Now it is at just this point, it seems to me, that Marxism fails because, unlike Christianity, it refuses to take the metaphysical basis of ethics seriously. Or, to put the point the other way round, it is at this point that Christianity, in going beyond Marxism, ceases to be wholly compatible with it.