"I think if I could be left my present feelings," a lady writes, "and be changed into a male imbecile,--that is, given a man's strength, but deprived, to a large extent, of reasoning power,--I might very likely act in the apparently cruel way they do. And this partly because many of their actions appeal to me on the passive side. The idea of being _strangled_ by a person I love does. The great sensitiveness of one's throat and neck come in here as well as the loss of breath. Once when I was about to be separated from a man I cared for I put his hands on my throat and implored him to kill me. It was a moment of madness, which helps me to understand the feelings of a person always insane. Even now that I am cool and collected I know that if I were deeply in love with a man who I thought was going to kill me, especially in that way, I would make no effort to save myself beforehand, though, of course, in the final moments nature would assert herself without my volition. What makes the horror of such cases in insanity is the fact of the love being left out. But I think I find no greater difficulty in picturing the mental attitude of a sadistic lunatic than that of a normal man who gets pleasure out of women for whom he has no love." The imagined pleasure of being strangled by a lover brings us to a group of feelings which would seem to be not unconnected with respiratory elements. I refer to the pleasurable excitement experienced by some in suspension, swinging, restraint, and fetters. Strangulation is the extreme and most decided type of this group of imagined or real situations, in all of which a respiratory disturbance seems to be an essential element.[126] In explaining these phenomena we have to remark that respiratory excitement has always been a conspicuous part of the whole process of tumescence and detumescence, of the struggles of courtship and of its climax, and that any restraint upon respiration, or, indeed, any restraint upon muscular and emotional activity generally, tends to heighten the state of sexual excitement associated with such activity.