I woke up this morning – one of the first mornings where I was able to sleep with the window open, the surest sign that Spring has finally arrived – and found it was still dark. I rarely wake up so early, and I took a moment – well, more like fifteen minutes – to lay there in the darkness, still beneath the covers, and listen to the birds calling in the dawn. After a few minutes in which my universe consisted only of birdsong and darkness, a sentence came into my head and began swirling around, like a song with an inescapable tune. “We know time.” It’s a koan that Dean Moriarty, Jack Kerouac’s trickster saint, repeats again and again throughout On the Road.