“Yesterday is gone. Tomorrow has not yet come. We have only today. Let us begin.” I was sitting on a beach a few years ago looking out on the ocean. There was nothing especially notable about that particular day, not one of those brilliantly clear vistas, in fact it was a warm morning with the sun making the horizon hazy and indistinct. There were a few birds flying past, a faint call off from the distance. In short, there was nothing of any postcard significance, just a warm morning along the Pacific coast.