Then one morning something happened. The floor of the tree-house fell out with a crash and the maple-tree looked exactly as it had done before the Hemulen had started building. That’s funny, said the Hemulen.[---] All three of them stood under the tree and looked at what had happened. Perhaps, Toft said shyly, perhaps Moominpappa would prefer to sit in the tree just as it is. I think you’ve got something there, the Hemulen admitted. More his cup of tea, what? Of course, I could knock a nail in for the lamp, but it would seem more natural if it hung on a branch.

From Tove Jansson´s Moominvalley in November pp.105-163