The chapter sets forth from four questions any viable philosophy of humor must address: why only humans can find something funny (as opposed to pleasing or playful)? Why what they find funny is limited to their world? Why is finding something funny the only feat of understanding that is rewarded by an animalistic bark of laughter? And why explaining a joke spoils it? Several theories of humor are briefly examined and rejected in favor of an updated version of Schopenhauer’s so-called “incongruity’ approach.