Sherlock Holmes is a government official. Mycroft has a unique civil service position as a kind of human database for all aspects of government policy. He lacks Sherlock's interest in physical investigation, however, preferring to spend his time at the Diogenes Club. Holmes says that he first developed his methods of deduction as an undergraduate; his earliest cases, which he pursued as an amateur, came from fellow university students. A meeting with a classmate's father led him to adopt detection as a profession, and he spent several years after university as a consultant before financial difficulties led him to accept John H.
William Lee Miller of the 20th century... ...He was a big influence on me, the reason I studied the things I did, and he would be my mentor -- my chief mentor... ...I didn't study directly with him; I studied at Yale under his brother, a man called Richard Niebuhr, who was kind of the Mycroft Holmes to his Sherlock Holmes -- you know, the Sherlock Holmes story, the one who's in the background and is even smarter than his well known brother. But Reinhold was down in New York, and we collaborated in many organizations. I wrote for his magazine. I knew