[79] De Stendhal (_De l'Amour_) mentions that when in London he was on terms of friendship with an English actress who was the mistress of a wealthy colonel, but privately had another lover. One day the colonel arrived when the other man was present. "This gentleman has called about the pony I want to sell," said the actress. "I have come for a very different purpose," said the little man, and thus aroused a love which was beginning to languish. [80] See Havelock Ellis, _Man and Woman_, chapter vi, "The Senses." [81] This liability is emphasized by Adler, _Die Mangelhafte Geschlechtsempfindung des Weibes_, p. 125. [82] _Zeitschrift für Ethnologie_, Bd. viii, 1876, pp. 22-28. II. The Definition of Sadism--De Sade--Masochism to some Extent Normal--Sacher-Masoch--No Real Line of Demarcation between Sadism and Masochism--Algolagnia includes both Groups of Manifestations--The Love-bite as a Bridge from Normal Phenomena to Algolagnia--The Fascination of Blood--The Most Extreme Perversions are Linked on to Normal Phenomena. We thus see that there are here two separate groups of feelings: one, in the masculine line, which delights in displaying force and often inflicts pain or the simulacrum of pain; the other, in the feminine line, which delights in submitting to that force, and even finds pleasure in a slight amount of pain, or the idea of pain, when associated with the experiences of love. We see, also, that these two groups of feelings are complementary. Within the limits consistent with normal and healthy life, what men are impelled to give women love to receive. So that we need not unduly deprecate the "cruelty" of men within these limits, nor unduly commiserate the women who are subjected to it. Such a conclusion, however, as we have also seen, only holds good within those normal limits which an attempt has here been made to determine. The phenomena we have been considering are strictly normal phenomena, having their basis in the conditions of tumescence and detumescence in animal and primitive human courtship. At one point, however, when discussing the phenomena of the love-bite, I referred to the facts which indicate how this purely normal manifestation yet insensibly passes over into the region of the morbid. It is an instance that enables us to realize how even the most terrible and repugnant sexual perversions are still demonstrably linked on to phenomena that are fundamentally normal. The love-bite may be said to give us the key to that perverse impulse which has been commonly called sadism.