Grown-ups are really strange. If they see a tree, for example, they think they only see a tree. They don’t realise that it could be Little Bird’s Home, the Village of Leaves, the Staircase to the Sky. If only they knew it, everything would be easier: making din dins, going to sleep, riding in the brum brum, they would all become the most enjoyable things in the world. So I thought I would help them to see it just as we children do.