From: Elementary 4.6
Line: SHERLOCK: Detection is, or ought to be, an exact science and should be treated in the same cold and unemotional manner.
Reference: This line is verbatim from Doyle’s The Sign of Four. In it, Holmes is admonishing Watson for adding too much life and romance into his stories. In the ep, Sherlock is admonishing his father for seemingly expressing emotional outrage after their joint questioning of someone involved in a case.
(As a side note, lovely lurkers, what do you think of this new character, Moreland Holmes? I have several thoughts but I’d like to hear what you think. Post in the comments.)