Lying in bed this morning, my nose stuffed, I thought of all the places I've had head colds: Lisbon, Lausanne, Turin, Riga, St. Petersburg, Nanjing, Magome (Japan), Vancouver, San Miguel de Allende, Washington, D.C. Severe sore throats in Iowa and Israel prefaced colds that, in Madison, Wisconsin, and Cairo, Egypt, turned into intestinal viruses. I've never been sicker on the road than I was in Madison. So there is pleasure in being home - with my books, my CDs, my grapefruits, my wife - with a cold.