Some links on this site are affiliate links, meaning a percentage of your purchase will support my work at Tech Powered Math at no additional cost to you. Thanks for your support! This Christmas, I was given a copy of John Urschel’s memoir, of Mind and Matter. I was already somewhat familiar Urschel. He was known as something of a peculiarity in the sports world in the 2010s: the mathematician football player, first at Penn State, and then for the Baltimore Ravens.