Max Ernst, whose 1920 painting Murdering Airplane is seen here, studied philosophy and psychology in Bonn and was interested in the alternative realities experienced by the insane.
Max Ernst, čija je slika Murdering Airplane iz 1920. godine prikazana gore, studirao je filozofiju i psihologiju u Bonnu i zanimao se za alternativne stvarnosti koje doživljavaju umno poremećeni.