It starts quickly and unexpectedly. You do not know when it will start, why, or what it will bring. There are times when even after it is done, you cannot be certain what it was, what it did, what it meant. Often, though, you forget it before you have time to capture it. It is evanescent, an intense glimmer that can quickly fade to a void, as though it was never there. You wish you could capture it, but you know well that dreams act under their own rules.