I went to college in the Southwest (and this is now decades ago -- so not so surprising now), in the desert, on a sprawling campus of more than 10,000 students. I was a semi-poor kid, cobbling together tuition with grants and loans, and still had to work my way through – as a tutor. On occasion, during breaks, I could fly home, though. One winter break I did, and on the flight back I saw the most incredible girl. She had...