I had a flash of grace tonight as I stepped out of the commuter train onto the platform. Usually, by Friday night, I'm in a vegetative state. Things are very unsettled at work -- we're in the midst of major changes in personnel and workflows, and many people are anxious about the changes they sense are coming. One staff member is retiring at the end of the month; two others have gone on leave for various reasons; yet another is hoping to retire in a few months.None of the retiring people, unfortunately, are me. But I digress. After days of wind, low clouds and cold fog, when the train pulled away I had a breathtaking sunset view to the west: the lucid, clear turquoise sky, still illuminated against bare trees in the foreground. It was a blaze of blue that I wasn't expecting at the end of a trying week, and a shade of blue that always reminds me of a Maxfield Parrish sky, as in the painting at left. Maxfield Parrish was a 20th-century Philadelphia artist and illu...