Morality is a mountain which we cannot climb by our own efforts; and if we could we should only perish in the ice and unbreathable air of the summit, lacking those wings with which the rest of the journey has to be accomplished. For it is from there that the real ascent begins. The ropes and axes are 'done away' and the rest is a matter of flying.

C.S. Lewis: essay collection and other short pieces (ed. Fount, 2000)