I thought all these things over when we decided to build in the suburbs, for Sarah is very nervous about burglars, and makes me get up at the slightest noise and go poking about. Only the fact that no burglar had ever entered our flat at night had prevented what might have been a serious accident to a burglar, for I made it a rule, when Sarah wakened me on such occasions, to waste no time, but to go through the rooms as hastily as possible and get back to bed; and at the speed I travelled I might have bumped into a burglar in the dark and knocked him over, and his head might have struck some hard object, causing concussion of the brain; and as a burglar has a small brain a small amount of concussion might have ruined it entirely. But as I am a slight man it might have been my brain that got concussed. A father of a family has to think of these things. The nervousness of Sarah regarding burglars had led me in this way to study the subject carefully, and my adoption of jet-black pajamas as nightwear was not due to cowardice on my part. I properly reasoned that if a burglar tried to shoot me while I was rushing around the house after him in the darkness, a suit of black pajamas would somewhat spoil his aim, and, not being able to see me, he would not shoot at all. In this way I should save Sarah the nerve shock that would follow the explosion of a pistol in the house. For Sarah was very much more afraid of pistols than of burglars. I am sure there were only two reasons why I had never killed a burglar with a pistol: one was that no burglar had ever entered our flat, and the other was that I never had a pistol. But I knew that one is much less protected in a suburb than in town, and when I decided to build I studied the burglar protection matter most carefully. I said nothing to Sarah about it, for fear it would upset her nerves, but for months I considered every method that seemed to have any merit, and that would avoid getting a burglar's blood--or mine--spattered around on our new furnishings. I desired some method by which I could finish up a burglar properly without having to leave my bed, for although Sarah is brave enough in sending me out of bed to catch a burglar, I knew she must suffer severe nerve strain during the time I was wandering about in the dark. Her objection to explosives had also to be considered, and I really had to exercise my brain more than common before I hit upon what I may now consider the only perfect method of handling burglars.