Spent a single overnight in the old students' jail as a young scholar, technically for a curfew infraction, and left with more respect for interpretation than any seminar had given: a wall of a hundred years of graffiti is itself a text, and someone has to read it. Walks the Philosophers' Walk above the Neckar when a student's question about self-understanding gets circular, because the professors who wore that path down knew that some circles are the whole point.