http://www.slate.com/articles/arts/culturebox/2015/10/quiz_who_s_who_in_raphael_s_renaissance_masterpiece_the_school_of_athens.html

On a wall of the Vatican’s Apostolic Palace is The School of Athens, a fresco painted by Raphael between 1509 and 1511. It is, in a sense, the faculty photograph of a fictive philosophy department: a dream team of ancient thinkers arrayed on the steps of an abstract classical structure. But The School of Athens is no staid department portrait. These philosophers are hard at work—teaching, learning, arguing, lounging in thought.