In a letter to an American woman named Mary Willis Shelburne on June 28, 1963, five months before Lewis himself died--
Think of yourself as a seed patiently waiting in the earth: waiting to come up a flower in the Gardener's good time, up into the real world, the real waking. I suppose that our whole present life, looked back on from there, will seem only a drowsy half-waking. We are here in the land of dreams. But cock-crow is coming. It is nearer now than when I began this letter.
--Collected Letters of C. S. Lewis, 3:1434 (emphasis original)