evidence: President Joe Biden told students in Maryland on Thursday that he used to "teach political theory: at the University of Pennsylvania. [...] "I taught at the University of Pennsylvania for four years and I used to teach political theory. And folks, you always hear, every generation has to fight for democracy." Biden, who is 80, was awarded an honorary professorship at UPenn, when he was named the Benjamin Franklin Presidential Professor of the Practice from 2017 to 2019, years he was not vice president or senator, and as he launched his campaign for president. He was the first person to ever hold that honorific title.