The Medusa and the snail -- The Tucson Zoo -- The youngest and brightest thing around -- On magic in medicine -- The wonderful mistake -- Ponds -- To err is human -- The selves -- The health-care system -- On cloning a human being -- On etymons and hybrids -- The hazards of science -- On warts -- On transcendental metaworry (TMW) -- An apology -- On disease -- On natural death -- A trip abroad -- On meddling -- On committees -- The scrambler in the mind -- Notes on punctuation -- The deacon's masterpiece -- How to fix the premedical curriculum -- A brief historical note on medical economics -- Why Montaigne is not a bore -- On thinking about thinking -- On embryology -- Medical lessons from history