The Adventure of the Greek Interpreter Sherlock Holmes, far from being a one-off in terms of his powers of observation and deductive reasoning, in fact has an elder brother whose skills, or so Holmes claims, outstrip even his own. As a consequence of this, Watson becomes acquainted with the Diogenes Club and his friend's brother, Mycroft. Mycroft, as Watson learns, does not have the energy of his younger brother and as a consequence is incapable of using his great skills for detective work: In spite of his inertia, the elder Holmes has often delivered the correct answer to a problem that Sherlock has brought to him.
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