"Well, but China?"
"The fish that you have tattooed immediately above your right wrist could only have been done in China. I have made a small study of tattoo marks and have even contributed to the literature of the subject. That trick of staining the fishes' scales of a delicate pink is quite peculiar to China. When, in addition, I see a Chinese coin hanging from your watch-chain, the matter becomes even more simple."
Mr. Jabez Wilson laughed heavily. "Well, I never!" said he. "I thought at first that you had done something clever, but I see that there was nothing in it after all."
"I begin to think, Watson," said Holmes, "that I make a mistake in explaining. 'Omne ignotum pro magnifico,' you know, and my poor little reputation, such as it is, will suffer shipwreck if I am so candid" (League.23-6)
(Omne ignotum pro magnifico is a standard Latin phrase that means "everything unknown seems grand.") In the previous passage we quoted in this section, Watson has an appropriate response to Holmes's genius: quiet awe. Here, Holmes is poking fun at Jabez Wilson for being too dumb to even get just how smart Holmes really is. But it seems like kind of a contradiction to us that the proof of Watson's intelligence is that he's smart enough to know how much smarter Holmes still is.
Quote 2
Indeed, I have found that it is usually in unimportant matters that there is a field for the observation, and for the quick analysis of cause and effect which gives the charm to an investigation. The larger crimes are apt to be the simpler, for the bigger the crime the more obvious, as a rule, is the motive. In these cases, save for one rather intricate matter which has been referred to me from Marseilles, there is nothing which presents any features of interest (Identity.11).
Holmes often makes this argument that simple problems offer the strangest examples of human behavior – think of the totally trivial-seeming goose and hat that start out "The Blue Carbuncle." But this idea of lowly questions being more meaningful than grand ones also has social meaning: for Holmes, social status takes a back seat to intellectual complexity.
Quote 3
'Pon my word, Watson, you are coming along wonderfully. You have really done very well indeed. It is true that you have missed everything of importance, but you have hit upon the method, and you have a quick eye for colour. Never trust to general impressions, my boy, but concentrate yourself upon details (Identity.86).
Poor Watson, he's always being told that he's "missed everything of importance." How does Holmes's interactions with Watson develop Holmes's own character for you? How does Watson act as Holmes's foil?