“But that’s like seeing a picture of a tree, and then actually climbing up in the tree with the branches going every way, the rustle of leaves and the smell and the bark under your fingers scraping and the wind going, and a thousand trees all round your tree, none of them being special and dramatic, just trees, and your tree was also just a tree being a tree, and the picture you’d looked at might be perfectly nice as its own flat thing, interesting and pretty and well composed, but it didn’t have much to do with the reality of the tree.”