As myth transcends thought, Incarnation transcends myth. The old myth of the Dying God, without ceasing to be myth, comes down from the heavens of legend and imagination to the earth of history. It happens at a particular date, in a particular place, followed by definable historical consequences. . . . By becoming fact it does not cease to be myth; that is the miracle. To be truly Christian we must both assent to the historical fact and also receive the myth (fact though it has become) with the same imaginative embrace which we accord to all other myths. The one is hardly more necessary than the other.
A Mind Awake: An Anthology of C. S. Lewis, ed. Clyde S. Kilby (New York: Harcourt Brace Jovanovich, 1968): p. 214.
If ever a myth had become fact, had been incarnated, it would be just like this. . . . the myth must have become fact; the Word, flesh; God, man.
Surprised by Joy, C. S. Lewis, p. 236