Goodbye. How many times have you said it? How many times have you meant it? How many times did you not want to say but had to? There are stories about Brussels; people come for a six-month internship and stay twenty years. Those are good stories. But there are lots of people who come for six-months, or a year, or two years, but then are gone again. They come into life here, in this city, drink deeply of it, but then they are off again. These are friendships that burn brightly and quickly, and they can be exhausting.