The variety of shape, pattern, and color found in the languages of the world is a testament to the wonder of nature, to the breathtaking array of possibilities that can emerge, tangled and wild, from the fertile human endowments of brain and larynx, intelligence and social skills. The job of the linguist, like that of the biologist or the botanist, is not to tell us how nature should behave, or what its creations should look like, but to describe those creations in all their messy glory and try to figure out what they can teach us about life, the world, and, especially in the case of linguistics, the workings of the human mind.