六座拿破仑半身像（6）

“There are no limits to the possibilities of monomania,” I answered. “There is the condition which the modern French psychologists have called the ‘idée fixe,’ which may be trifling in character, and accompanied by complete sanity in every other way. A man who had read deeply about Napoleon, or who had possibly received some hereditary family injury through the great war, might conceivably form such an idée fixe and under its influence be capable of any fantastic outrage.”

“That won't do, my dear Watson,” said Holmes, shaking his head; “for no amount of idée fixe would enable your interesting monomaniac to find out where these busts were situated.”

“Well, how do you explain it?”

“I don't attempt to do so. I would only observe that there is a certain method in the gentleman's eccentric proceedings. For example, in Dr. Barnicot's hall, where a sound might arouse the family, the bust was taken outside before being broken, whereas in the surgery, where there was less danger of an alarm, it was smashed where it stood. The affair seems absurdly trifling, and yet I dare call nothing trivial when I reflect that some of my most classic cases have had the least promising commencement. You will remember, Watson, how the dreadful business of the Abernetty family was first brought to my notice by the depth which the parsley had sunk into the butter upon a hot day. I can't afford, therefore, to smile at your three broken busts, Lestrade, and I shall be very much obliged to you if you will let me hear of any fresh developments of so singular a chain of events.”