Robert Fairbairn

We are all the products of our environment. Tim Thornton could see as much, when he saw a foal that had been delivered at sea trying to walk on dry land for the first time. "He was, like, six weeks old," he recalls. "It was so funny to see him get off that ship, rocking everywhere, giving it the sea legs." But then that's pretty well how Thornton himself might have felt, as one born and bred for horses, had he ever been torn away to work in some other...