Heterogeneous personality has been explained as the result of inheritance—the traits of character of incompatible and antagonistic ancestors are supposed to be preserved alongside of each other.(90) This explanation may pass for what it is worth—it certainly needs corroboration. But whatever the cause of heterogeneous personality may be, we find the extreme examples of it in the psychopathic temperament, of which I spoke in my first lecture. All writers about that temperament make the inner heterogeneity prominent in their descriptions. Frequently, indeed, it is only this trait that leads us to ascribe that temperament to a man at all. A “dégénéré supérieur” is simply a man of sensibility in many directions, who finds more difficulty than is common in keeping his spiritual house in order and running his furrow straight, because his feelings and impulses are too keen and too discrepant mutually. In the haunting and insistent ideas, in the irrational impulses, the morbid scruples, dreads, and inhibitions which beset the psychopathic temperament when it is thoroughly pronounced, we have exquisite examples of heterogeneous personality. Bunyan had an obsession of the words, “Sell Christ for this, sell him for that, sell him, sell him!” which would run through his mind a hundred times together, until one day out of breath with retorting, “I will not, I will not,” he impulsively said, “Let him go if he will,” and this loss of the battle kept him in despair for over a year. The lives of the saints are full of such blasphemous obsessions, ascribed invariably to the direct agency of Satan. The phenomenon connects itself with the life of the subconscious self, so‐called, of which we must ere‐long speak more directly. Now in all of us, however constituted, but to a degree the greater in proportion as we are intense and sensitive and subject to diversified temptations, and to the greatest possible degree if we are decidedly psychopathic, does the normal evolution of character chiefly consist in the straightening out and unifying of the inner self. The higher and the lower feelings, the useful and the erring impulses, begin by being a comparative chaos within us—they must end by forming a stable system of functions in right subordination. Unhappiness is apt to characterize the period of order‐making and struggle. If the individual be of tender conscience and religiously quickened, the unhappiness will take the form of moral remorse and compunction, of feeling inwardly vile and wrong, and of standing in false relations to the author of one’s being and appointer of one’s spiritual fate. This is the religious melancholy and “conviction of sin” that have played so large a part in the history of Protestant Christianity. The man’s interior is a battle‐ground for what he feels to be two deadly hostile selves, one actual, the other ideal. As Victor Hugo makes his Mahomet say:—