I think I'm going to give up on Adam Roberts' "The Thing Itself." I'm about 1/3 of the way through it, and... it's not as great as I thought it would be. Plus, for an SF (or PhF) book based on Kant's philosophy, is it so much to ask for it to get that philosophy right? I've also been reading, pretty desultorily, Shirley Barrett's "The Bus on Thursday," but I've been much more enjoying the biographies of German Romantic poet Friedrich Hölderlin ( by Pierre Bertaux) and German philosopher G.F.W. Hegel (by Terry Pinkard), which I've been reading in parallel. Born the same year (1770), the two met and became the closest of friends at university (the Tübingen seminary), were both deeply transformed by the French revolution, and ended up going in very different directions: Hölderlin wrote a gorgeous novel, fell deeply in love with a woman whose children he was tutoring (and who fully requited his love), wrote perhaps the most beautiful, mystical poems in the German language, then, when, after having been forced to leave town, he learned of his beloved's death in 1802, he fell into a deep depression from which he never fully recovered, and spent the second half of his life in the grips of mental illness (possibly schizophrenia by 1806), dying only at the age of 73. Hegel, who last saw his friend in 1802, went on to develop perhaps the most all-encompassing system of philosophy ever, some of it arguably under the influence of Hölderlin's thought.