Dusk, I realized, is just an illusion, because the sun if either above the horizon or below it. And that means that day and night are linked in a way that few things are: there cannot be one without the other, yet they cannot exist at the same time. How would it feel, I remember wondering, to be always together, yet forever apart? I know the answer now. I know what it's like to be day and night now: always together, forever apart.