It was also a consequence of my deeply private studies that about the same time I had an accident with the hook of his bedroom door. The night being sultry, I had removed my coat, and hung it on his hook, over one of his, and, somehow, in going through the pockets of the undermost coat in search of the key, he had several times twisted the collar-tab by which my own garment hung. In taking my coat down again a little later I used some force; I used so much force that I fetched the whole hook down, leaving a small piece out of the wood of the door, and, Archie, busy emptying a drawer, remarked that to put it up again would be something for the next tenant to do. "Oh no--better leave the place as you found it," I said. "You go on--I'll attend to it." "Well, I don't know where you're going to find the screw-drivers--with my latchkey, I suppose," he remarked. But I knew where the screw-driver was. I found it, and put the hook up securely again, a couple of inches below its old place. I also carried constantly in my pocket, ready for use at any moment, a written page of notepaper, the compilation of which had cost me a good deal of thought in the reading-room. Yet I must make perfectly clear to you that these and twenty other things that had the appearance of preparations committed me to nothing. They were merely part of the prudent course of making ready, not for the best that might happen, but for the worst; and that the worst might be avoided I plotted at the same time with almost extravagant care. For all this last, however, the effective human mind works as it were in separate compartments of the job to be done, and there was no denying that this was or might become a job. I treated it as a job. And as a job it cost me no more qualms and tremors than the cool preparation for an examination in Method might have done. I did not turn pale when I read in a book of forensic medicine that when one man slays another he commonly uses far too much violence; I merely noted the fact, and reminded myself of it from time to time, to be perfect in my (I still hoped superfluous) lesson. I did not blench when I learned that, judicial executions apart, ninety-nine per cent. of hangings were suicidal, so that, certain other precautions being observed, a presumption could be made preponderatingly probable. I merely turned my attention to the qualifying precautions. And as for that sheet of paper I carried--well, young men have killed themselves for less reason, and seldom for greater. Indeed, to die by his own hand might be the final virtuous act in which he took his farewell of the world. I would--still in the last event, you understand--allow him that empty semblance of virtue. Whether he needed it in heaven or not, I needed it on earth.