Pleasures are shafts of the glory as it strikes our sensibility. [...]
But aren't there bad, unlawful pleasures? Certainly there are. But in calling them "bad pleasures" I take it we are using a kind of shorthand. We mean "pleasures snatched by unlawful acts." It is the stealing of the apple that is bad, not the sweetness. The sweetness is still a beam from the glory. That does not palliate the stealing. It makes it worse. There is sacrilege in the theft. We have abused a holy thing.
I have tried, since that moment, to make every pleasure a channel of adoration. I don't mean simply by giving thanks for it. One must of course give thanks, but I mean something different. How shall I put it? We can't--or I can't--hear the song of a bird simply as a sound. Its meaning or message ("That's a bird") comes with it inevitably. This heavenly fruit is instantly redolent of the orchard where it grew. This sweet air whispers of the country from whence it blows. It is a message. We know we are being touched by a finger of that right hand at which there are pleasures for evermore. There need be no question of thanks or praise as a separate event, something done afterwards. To experience the tiny theophany is itself to adore.
~C.S. Lewis, Letters to Malcolm: Chiefly on Prayer, (1964)