And because there are three classes, any merely twofold division of the world into good and bad is disastrous. It overlooks the fact that the members of the second class (to which most of us belong) are always and necessarily unhappy. The tax which moral conscience levies on our desires does not in fact leave us enough to live on. As long as we are in this class we must either feel guilt because we have not paid the tax or penury because we have. The Christian doctrine that there is no 'salvation' by works done according to the moral law is a fact of daily experience. Back or on we must go. But there is no going on simply by our own efforts. If the new Self, the new Will, does not come at His own good pleasure to be born in us, we cannot produce Him synthetically.
The price of Christ is something, in a way, much easier than moral effort – it is to want Him. It is true that the wanting itself would be beyond our power but for one fact. The world is so built that, to help us desert our own satisfactions, they desert us. War and trouble and finally old age take from us one by one all those things that the natural Self hoped for at its setting out. Begging is our only wisdom, and want in the end makes it easier for us to be beggars. Even on those terms the Mercy will receive us."
From the collection of C.S. Lewis essays, Present Concerns.
For a perspective on Three Kinds of Men, view The Gospel, Moralism and Irreligion by Pastor Tim Keller.