We cap off the series of lectures on the Middle Ages by piecing together how the people of the high and late Middle Ages understood their place in the cosmos. From the lowliest peasants to popes and emperors, medievals believed they formed the limbs of a living, breathing social body, and that body or tree was part of a Great Chain of Being connecting rocks and dirt to stars and planets and ultimately to God. Through these metaphors we can understand why medievals disapproved of commerce and abhorred high finance. We end with a commentary on the great, crowning statement of the late medieval mind, the prologue to Chaucer's Canterbury Tales. Please support these lectures, at https://www.patreon.com/user?u=5530632