If you scroll down, you'll find an answer where it appears that math broke their brain and they left to go start a restaurant and then did other things like computer graphics. The math department is home to some tragically spectacular mental breakdowns.

But, I don't think his answer is limited just to mathematicians. The gist of it is 'Go do good things and be smart.' I think those same things could apply to even someone without a high school diploma, though probably with less chance of efficacy.

It's a great response and unfortunate that they closed it.