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Some of my books, I think work well, and then there are some that I have actually almost forgotten about. 'Hugo, das Kind in den besten Jahren,' works quite well, I would argue. But it’s not a children’s favourite. And then I have invented the first European working class ghost, one that is not a ghost of nobility. ‘Rosa Riedl, Schutzgespenst' is, in my opinion, also a quite useful book.”