Many Americans go to the developing world to serve others. A smaller percentage actually end up being useful. Those that do have often climbed a moral ladder. They start out with certain virtues but then develop more tenacious ones. The first virtue they possess is courage, the willingness to go off to a strange place. For example, Blair Miller was a student at the University of Virginia who decided she wanted to teach abroad. She Googled “teach abroad” and found a woman who had been teaching English in a remote town in South Korea and was looking for a replacement.