It took all the willpower I could muster to leave my cozy dorm room and make the snow-crunching slog across campus for my 8:00 a.m. Latin seminar. Minnesota winters are no joke. To entice us into attempting the trek, my professor began each class session with an etymology game. “Can you guess who this guy is and which modern words are derived from his name?” she asked, holding up an image of a two-faced Roman god.