In order to avoid misunderstanding, I may add that though I myself am a Theist, and indeed a Christian, I am not here attempting any indirect argument for Theism. I am simply arguing that if we are to have values at all we must accept the ultimate platitudes of Practical Reason as having absolute validity: that any attempt, having become sceptical about these, to reintroduce value lower down on some supposedly more ‘realistic’ basis, is doomed. Whether this position implies a supernatural origin for the Tao is a question I am not here concerned with.