No religion, so long as it believed, can have that kind of beauty which we find in the gods of Titian, of Botticelli, or of our own romantic poets. To this day you cannot make poetry of that sort out of the Christian heaven and hell. The gods must be, as it were, disinfected of belief; the last taint of the sacrifice, and of the urgent practical interest, the selfish prayer, must be washed away from them, before that other divinity can come to light in the imagination. For poetry to spread its wings fully, there must be, besides the believed religion, a marvellous that knows itself as myth. For this to come about, the old marvellous, which once was taken as fact, must be stored up somewhere, not wholly dead, but in a winter sleep, waiting its time. If it is not so stored up, if it is allowed to perish, then the imagination is impoverished. Such a sleeping-place was provided for the gods by allegory. Allegory may seem, at first, to have killed them; but it killed only as the sower kills, for gods, like other creatures, must die to live.

C.S. Lewis, The Allegory of Love (Oxford, 1958 [1936]), p. 82.

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