Caption: Henricus de Alemannia, a Medieval professor lecturing ex cathedra.

Note the behavior of the Medieval students---chatting, napping, eating, browsing their Medieval laptops---some things never change.

Credit/Permission: Laurentius de Voltolina (fl. 1350--1400?), 2nd half of 14th century (photographer: The Yorck Project: 10.000 Meisterwerke der Malerei, 2002) / Public domain.
Image link: Wikipedia: File:Laurentius de Voltolina 001.jpg.
Local file: local link: medieval_professor.html.
File: Art file: medieval_professor.html.