I am indebted to a lady for the following communication on the foregoing aspect of this question: "I believe that, when a person takes pleasure in inflicting pain, he or she imagines himself or herself in the victim's place. This would account for the transmutability of the two sets of feelings. This might be particularly so in the case of men. A man may not care to lower his dignity and vanity by putting himself in subjection to a woman, and he might fear she would feel contempt for him. By subduing her and subjecting her to passive restraint he would preserve, even enhance, his own power and dignity, while at the same time obtaining a reflected pleasure from what he imagined she was feeling. "I think that when I get pleasure out of the idea of subduing another it is this reflected pleasure I get. And if this is so one could thus feel more kindly to persons guilty of cruelty, which has hitherto always seemed the one unpardonable sin. Even criminals, if it is true that they are themselves often very insensitive, may, in the excitement of the moment, imagine that they are only inflicting trifling pain, as it would be to them, and that their victim's feelings are really pleasurable. The men I have known most given to inflicting pain are all particularly tender-hearted when their passions are not in question. I cannot understand how (as in a case mentioned by Krafft-Ebing) a man could find any pleasure in binding a girl's hands except by imagining what he supposed were her feelings, though he would probably be unconscious that he put himself in her place.