I do not deny that in some human monsters egotism, as a sacrifice made to the god "Myself," is so powerful as to exclude love; but such cases are very rare if they last the whole life, rare when they last for a shorter period. It often occurs that a man, trained to and living in the most sordid egotism, falls in love when old with a poor young girl, and becomes expansive with her, generous, prodigal, perhaps; and he too pays, at one time and in a very ridiculous way, the debt which nature in vain claimed from him during his young and mature age. Great egotists also love, but in a selfish manner, denying the most prodigal and most splendid of the passions that tribute which they cannot refuse to themselves. They are ignorant of the most sublime joys, of the most inebriating enthusiasms of love, of the holy voluptuousness of loving a woman more than oneself; but they also love, they love in their own way. If you wish to study the physiognomy of egotistical love, compare man's with woman's love and you will find it easy to penetrate into the mysteries of this part of psychology; and if you desire a more striking contrast, that the differences may be represented in a bolder relief, compare the love of an old man with that of a young woman: you will have in the former an egotistical type of love, in the latter a generous one. More complex are the influences which the sentiment of possession and that of self-esteem exercise upon love, and the importance given to jealousy is sufficient to prove this. The physiological study of jealousy would be sufficient, if it were still needed, to demonstrate the queer confusion of language in relation to psychical facts. One would say that it is the language of the alchemists, employed to express the chemical composition of bodies; one would believe that we are still dealing with the "nothing white," the "philosophic wool" and the "tetrascelitetraoxicoquindodeca" of our good ancestors.