Milan Kundera’s novel Immortality wryly depicts Goethe preparing for immortality — neatly laying out his life in Dichtung und Warheit and arranging for Johann Eckermann to record his conversation. He is, says Kundera, designing a handsome smoking jacket, posing for posterity. He wants to look his best. Then along comes the young Bettina von Arnim, a platonic flirtation from his past, with an alternative, memorably ridiculous version, ostensibly admiring, in which Goethe’s wife Christiane is portrayed as ‘the crazy, fat sausage’.