No one can look at the paintings of Hieronymus Bosch without amazement and bewilderment. Professor Gibson shows that what seems inexplicable to us today--the canvases full of torture, monsters, and leering devils--was perfectly intelligible to the fifteenth-century viewer. The subjects of Bosch's paintings were in fact the overwhelming concerns of late medieval Europe: the Last Judgment, original sin, death, temptations of the flesh. The author describes each picture in detail, placing each work within the context of medieval folklore and religion, and explains that many of the acts portrayed in the pictures were visual translations of verbal puns or metaphors.