E.l. Konigsburg said this quote

“ Because we are human we have a long childhood, and one of the jobs of that childhood is to sculpt our brains. We have years--about twelve of them--to draw outlines of the shape we want our sculpted brain to take. Some of the parts must be sculpted at critical times. One cannot, after all, carve out toes unless he knows where the foot will go. We need tools to do some of the fine work. The tools are our childhood experiences. And I'm convinced that one of those experiences must be children's books. And they must be experienced within the early years of our long childhood. ”