I Never Wrote Down to Anyone
I was therefore writing 'for children' only in the sense that I excluded what I thought they would not like or understand; not in the sense of writing what I intended to be below adult attention. I may of course have been deceived, but the principle at least saves one from being patronizing. I never wrote down to anyone; and whether the opinion condemns or acquits my own work, it certainly is my opinion that a book worth reading only in childhood is not worth reading even then. The inhibitions which I hoped my stories would overcome in a child's mind may exist in a grown-up's mind too, and may perhaps be overcome by the same means.
The Fantastic or Mythical is a Mode available at all ages for some readers; for others, at none. At all ages, if it is well used by the author and meets the right reader, it has the same power: to generalize while remaining concrete, to present in palpable form not concepts or even experiences but whole classes of experience, and to throw off irrelevancies. But at its best it can do more; it can give us experiences we have never had and thus, instead of 'commenting on life', can add to it. I am speaking of course, about the thing itself, not my own attempts at it.
C.S. Lewis, Of Other Worlds, "Sometimes Fairy Stories May Say Best What's to be Said" (1956)