One of my office mates is engaged. As is the wont of grumpy old men everywhere, we are showering her with unwanted (and, in most cases, unwarranted) advice. We can't help ourselves, really. One of my compatriots made an observation, however, that was something of an epiphany. In regards to making a marriage work, and last, what's the key ingredient? Looks? Money? Grit and ambition? A sense of humor? Kindness to small animals, children (especially when they are indistinguishable from small...