The serenity of a clear fall day is among life's greatest delights, clean and pure: the slightly darkened blue sky, rainbows of orange and red mums, warty pumpkins at the farmer's market. October is always my favorite. We are still in Minnesota, and it has been my favorite month here, just as it is back east. It is the feeling of the evening before your birthday all month. Life's pacing has warped the last 6 months: long days with crackling fires and talking late into the evening--single convers…