"It blends together somewhat in that there's this unified competitive nature," he said in a 2015 interview. "Even in math, when I'm trying to solve a problem, I get very competitive about it. But it's different in that for football, I just love the physicality of it. In math, there's real elegance to it. There's beauty in taking this construct, which we have made, and using it to explain this fantastic and complex world we live in."