Prompt
Generate a realistic image of a middle-aged man with a serious expression, wearing formal attire, sitting at a desk with mathematical papers and a pen in hand, in a style reminiscent of a 20th-century academic. The man should have a slightly worn and aged appearance, with a hint of introspection. The background should be a warm, wooden-paneled study or office, with books and mathematical models scattered about. The overall mood should be one of contemplative intellectualism. The subject is Max Dehn, a renowned mathematician, specifically in his later years, likely in the United States after his emigration.