Yale professor R. Howard Bloch reads the sculptural program on the west facade of Chartres Cathedral as a stone encyclopedia of the medieval curriculum. He walks through the Royal Portal's depiction of the incarnation, then points out the seven liberal arts carved around the tympanum, each paired with an ancient authority: Aristotle for logic, Cicero for rhetoric, Euclid for geometry, Ptolemy for astronomy. The north portal's ascension and the central tympanum's second coming, framed by the four-faced tetramorph drawn from Ezekiel's vision, get close readings alongside the zodiac and labors-of-the-months frieze. Bloch ends on the elongated jamb statues of Old Testament kings and queens, explaining how their presence served as propaganda in the genealogical rivalry between the Plantagenet and Angevin dynasties. Drawn from Bloch's Yale course The Age of Cathedrals, the lecture treats the facade as both theology and politics carved for an illiterate public to read.