He thought he saw an Albatross    That fluttered round the lamp: He looked again, and found it was    A Penny-Postage Stamp. ""You'd best be getting home,"" he said:    ""The nights are very damp!"" ... He thought he saw an Argument    That proved he was the Pope: He looked again, and found it was    A Bar of Mottled Soap. ""A fact so dread,"" he faintly said,    ""Extinguishes all hope!""

Lewis Carroll, The Mad Gardener's Song

Dr. Green practices the best medicine, but Dr. Zorba and Dr. Casey are rather saturnine on his manner.