In the mental life of the degenerate the anomaly of his nervous system has, as a consequence, the incapacity of attaining to the highest degree of development of the individual, namely, the freely coming out from the factitious limits of individuality, i.e., altruism. As to the relation of his ‘Ego’ to his ‘non-Ego,’ the degenerate man remains a child all his life. He scarcely appreciates or even perceives the external world, and is only occupied with the organic processes in his own body. He is more than egoistical, he is an ego-maniac.

His ego-mania may spring directly from different circumstances of his organism. His sensory nerves may be obtuse, are, in consequence, but feebly stimulated by the external world, transmit slowly and badly their stimuli to the brain, and are not in a condition to incite it to a sufficiently vigorous perceptive and ideational activity. Or his sensory nerves may work moderately well, but the brain is not sufficiently excitable, and does not perceive properly the impressions which are transmitted to it from the external world.

The obtuseness of the degenerate is attested by almost all observers. From the almost illimitable number of facts which could be adduced on this point, we will only give a very concise, but sufficiently characteristic selection. ‘Among many idiots,’ says Sollier, ‘there is no distinction between sweet and bitter. When sugar and colocynth are administered to them alternately, they manifest no change of sensation.... Properly speaking, taste does not exist among them.... Besides this, there are perversions of taste. We are not speaking here of complete idiots ... but even of imbeciles who eat ordure or repulsive things ... even their own excrements.... The same remarks apply to smell. Perhaps sensibility appears still more absolutely obtuse for smells than for taste.... Tactile sensibility is very obtuse in general, but it is always uniformly so.... Sometimes it might be a question whether there is not complete anæsthesia.’[239] Lombroso has examined the general sensitiveness of skin in sixty-six criminals, and has found it obtuse in thirty-eight among them, and unequal in the two halves of the body in forty-six.[240] In a later work he sums up in these words his observations of sensorial acuteness in the degenerate: ‘Inaccessible to the feeling of pain, themselves without feeling, they never understand pain even in others.’[241] Ribot traces the ‘diseases of personality’ (that is, the false ideas of the ‘I’) to ‘organic disturbances, of which the first result is to depress the faculty of feeling in general; the second, to pervert it.’ ‘A young man whose conduct had always been excellent suddenly gave himself up to the worst inclinations. It was ascertained that in his mental condition there was no sign of evident alienation, but it could be seen that the whole outer surface of the skin had become absolutely insensible.’ ‘It may seem strange that weak and false sensitivity ... that is, that simple disturbances or sensorial alterations should disorganize the “Ego.” Nevertheless, observation proves it.’[242] Maudsley[243] describes some cases of degeneration among children whose skin was insensible, and remarks: ‘They cannot feel impressions as they naturally should feel them, nor adjust themselves to their surroundings, with which they are in discord; and the motor outcomes of the perverted affections of self are accordingly of a meaningless and destructive character.’[244]

The defective sensibility of the degenerate, confirmed by all observers, is, moreover, susceptible of different interpretations. Whereas many consider it a consequence of the pathological condition of the sensory nerves, others believe that the perturbation has its seat, not in these nerves, but in the brain; not in the ducts, but in the centres of perception. To quote one of the most eminent among the psycho-physiologists of the new school, Binet[245] has proved that, ‘if a portion of the body of a person is insensible, he is ignorant of what passes there; but, on the other hand, the nervous centres in connection with this insensible region can continue to act; the result is that certain acts, often simple, but sometimes very complicated, can be accomplished in the body of a hysterical subject, without his knowledge; much more, these acts can be of a psychical nature, and manifest an intelligence which will be distinct from that of the subject, and will constitute a second “I” co-existent with the first. For a long time there was a misconception of the true nature of hysterical anæsthesia, and it was compared to a common anæsthesia from organic causes, due, for example, to the interruption of afferent nerves. This view must be wholly abandoned, and we know now that hysterical anæsthesia is not a true insensibility; it is insensibility from unconsciousness from mental disaggregation; in a word, it is psychical insensibility.’

Most frequently it is not a question of simple cases, where it is the sensory nerves alone, or only the cerebral centres which work badly, but of mixed cases, where the two apparatuses have a diversely varying part in the disturbance. But whether the nerves do not conduct the impressions to the brain, or the brain does not perceive, or does not raise the impressions brought to it into consciousness, the result is always the same, viz., the external world will not be correctly and distinctly grasped by consciousness, the ‘not-I’ will not be suitably represented in consciousness, the ‘I’ will not experience the necessary derivation of the exclusive preoccupation with the processes taking place in its own organism.

The natural healthy connection between organic sensations and sense-perceptions is much more strongly displaced when to the insensibility of the sensory nerves, or of the centres of perception, or both, is added an unhealthily modified and intensified vital activity of the organs. Then the organic ego-sensibility, or cœnæsthesis, advances irrepressibly into the foreground, overshadowing in great part or wholly the perceptions of the external world in consciousness, which no longer takes notice of anything but the interior processes of the organism. In this way there originates that peculiar hyper-stimulation or emotionalism constituting, as we have seen, the fundamental phenomenon of the intellectual life of the degenerate. For the fundamental emotional tone, despairing or joyful, angry or tearful, which determines the colour of his presentations as well as the course of his thoughts, is the consequence of phenomena taking place in his nerves, vessels and glands.[246] The consciousness of the emotionally degenerate subject is filled with obsessions which are not inspired by the events of the external world, and by impulsions which are not the reaction against external stimulation. To this is added next the unfailing weakness of will of the degenerate person, which makes it impossible for him to suppress his obsessions, to resist his impulsions, to control his fundamental moods, to keep his higher centres to the attentive pursuit of objective phenomena. According to the saying of the poet, the necessary result of these conditions is that the world must be differently reflected in such heads than it is in normal ones. The external world, the ‘not-I,’ either does not exist at all in the consciousness of an emotionally degenerate subject, or it is merely represented there as on a faintly reflecting surface, by a scarcely recognisable, wholly colourless image, or, as in a concave or convex mirror, by a completely distorted, false image; consciousness, on the other hand, is imperiously monopolized by the somatic ‘I,’ which does not permit the mind to be occupied with anything but the painful or tumultuous processes taking place in the depths of the organs.

Badly-conducting sensory nerves, obtuse perceptive centres in the brain, weakness of will with its resulting incapacity of attention, morbidly irregular and violent vital processes in the cells, are therefore the organic basis on which ego-mania develops.

The ego-maniac must of necessity immensely over-estimate his own importance and the significance of all his actions, for he is only engrossed with himself, and but little or not at all with external things. He is therefore not in a position to comprehend his relation to other men and the universe, and to appreciate properly the part he has to play in the aggregate of social institutions. There might at this juncture be an inclination to confound ego-mania with megalomania, but there is a characteristic difference between the two states. Megalomania, it is true, is itself, like its clinical complement, the delusion of persecution, occasioned by morbid processes within the organism obliging consciousness perpetually to be attending to its own somatic ‘Ego.’ More especially the unnaturally increased bio-chemical activity of the organs gives rise to the pleasantly extravagant presentations of megalomania, while retarded or morbidly aberrant activity gives rise to the painful presentations of the delusion of persecution.[247] In megalomania, however, as in the delusion of persecution, the patient is constantly engrossed with the external world and with men; in ego-mania, on the contrary, he almost completely withdraws himself from them. In the systematically elaborated delirium of the megalomaniac and persecution-maniac, the ‘not-I’ plays the most prominent part. The patient accounts for the importance his ‘Ego’ obtains in his own eyes by the invention of a grand social position universally recognised, or by the inexorable hostility of powerful persons, or groups of persons. He is Pope, or Emperor, and his persecutors are the chief men in the State, or great social powers, the police, the clergy, etc. His delirium, in consequence, takes account of the State and society; he admits their importance, and attaches the greatest value, in one case, to the homage, in the other to the enmity, of his neighbours. The ego-maniac, on the contrary, does not regard it as necessary to dream of himself as occupying some invented social position. He does not require the world or its appreciation to justify in his own eyes himself as the sole object of his own interest. He does not see the world at all. Other people simply do not exist for him. The whole ‘non-Ego’ appears in his consciousness merely as a vague shadow or a thin cloud. The idea does not even occur to him that he is something out of the common, that he is superior to other people, and for this reason either admired or hated; he is alone in the world; more than that, he alone is the world and everything else, men, animals, things are unimportant accessories, not worth thinking about.

The less diseased are the conducting media, the centres of nutrition, perception and volition, so much the weaker naturally will the ego-mania be, and so much the more harmlessly will it be manifested. Its least objectionable expression is the comic importance which the ego-maniac often attributes to his sensations, inclinations and activities. Is he a painter? he has no doubt that the whole history of the universe only hinges on painting, and on his pictures in particular. Is he a writer of prose or verse? he is convinced that humanity has no other care, or at least no more serious care, than for verses and books. Let it not be objected that this is not peculiar to ego-maniacs, but is the case with the vast majority of mankind. Assuredly everyone thinks what he is doing is important, and that man would not be worth much who performed his work so heedlessly and so superficially, with so little pleasure and conscientiousness, that he himself could not look upon it with respect. But the great difference between the rational and sane man and the ego-maniac is, that the former sees clearly how subordinate his occupation is to the rest of humanity, although it fills his life and exacts his best powers, while the latter can never imagine that any exertion to which he devotes his time and efforts can appear to others as unimportant and even puerile. An honest cobbler, resoleing an old boot, gives himself up heart and soul to his work, nevertheless he admits that there are far more interesting and important things for humanity than the repairing of damaged sole-leather. The ego-maniac, on the contrary, if he is a writer, does not hesitate to declare, like Mallarmé, ‘The world was made to lead up to a fine book.’ This absurd exaggeration of one’s own occupations and interests produces in literature the Parnassians and the Æsthetes.

If degeneration is deeper, and ego-mania is stronger, the latter no longer assumes the comparatively innocent form of total absorption in poetic and artistic cooings, but manifests itself as an immorality, which may amount to moral madness. The tendency to commit actions injurious to himself or society is aroused now and then even in a sane man when some obnoxious desire demands gratification, but he has the will and the power to suppress it. The degenerate ego-maniac is too feeble of will to control his impulsions, and cannot determine his actions and thoughts by a regard to the welfare of society, because society is not at all represented in his consciousness. He is a solitary, and is insensible to the moral law framed for life in society, and not for the isolated individual. It is evident that for Robinson Crusoe the penal code did not exist. Alone on his island, having only Nature to deal with, it is obvious he could neither kill, steal, nor pillage in the sense of the penal code. He could only commit misdemeanours against himself. Want of insight and of self-control are the only immoralities possible to him. The ego-maniac is a mental Robinson Crusoe, who in his imagination lives alone on an island, and is at the same time a weak creature, powerless to govern himself. The universal moral law does not exist for him, and the only thing he may possibly see and avow, perhaps also regret a little, is that he sins against the moral law of the solitary, i.e., against the necessity of controlling instincts in so far as they are injurious to himself.