I have three children, a girl and two boys. Our worlds overlap but, already, these worlds are not the same. Their worlds, the worlds that they will grow to fill, are already taking leave of mine. Their futures are already wedged into our present. This is both heartening and frightening. So much of our world deserves to be left. So much of it deserves to be scrapped and recycled. But, too, this scares me. I worry that a lot of what has mattered most to me in this world-Mormonism in particular-may be largely unintelligible to them in theirs. This problem isn't new, but it is perpetually urgent....