1685-1750 709 ai art artificialintelligence bach beauty biography borès cognition colors consciousness creativity criticismandinterpretationleisen documentaryfilms escher exhibitions formal-systems francisco gödel historyandcriticism influencegrierson intelligence johannsebastian john kurt logic mathematics meaning metamathematics mitchell modernism(art) motionpictureproducersanddirectors music ne netherlands paradox philosophy printmakers productionanddirection recursion self-reference spain symbolism symmetry systems-theory u4a unitedstates zen