Max Planck was made a full professor at the University of Berlin at an unusually early age. One day, having forgotten which room he had been assigned for a lecture, he stopped at the nearest university office to find out. "Please tell me," he asked the elderly man in charge, "in which room does Professor Planck lecture today?" The old man patted him on the shoulder. "Don't go there, young fellow," he advised. "You are much too young to understand the lectures of our learned Professor Planck!"
["An experiment is a question which science poses to Nature," Planck once remarked, "and a measurement is the recording of Nature's answer."]