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Sexual Selection. On the generality of intercrosses between individuals of the same species. Circumstances favourable and unfavourable to Natural Selection, namely, intercrossing, isolation, number of individuals. Slow action. Extinction caused by Natural Selection. Divergence of Character, related to the diversity of inhabitants of any small area, and to naturalisation.
For the animal, sexual desire, except when called forth by the conditions involved by procreative necessities, has no existence. It is far otherwise in man, for whom, even when the question of procreation is altogether excluded, sexual love is still an insistent need, and even a condition of the finest spiritual development.
A man never knows his own children, and the mothers, instead of raising their children themselves, give them over to a common nursery, somewhat after the suggestion of Plato in his Republic. If any two persons are suspected of forming special attachments, and so of violating the principle of equal and universal love, or of using their sexual freedom too liberally, they are put under discipline.
While from the standpoint of the species, the criterion of the sex classification of its members will depend upon their capacity to fertilize or to be fertilized, a quality that may, therefore, be spoken of as the primary sex character, a number of other traits have been evolved by sexual selection, the secondary sex traits.
Maskull saw no sexual organs and failed to understand how the young came into existence. Then he witnessed an astonishing sight. A large and fully developed plant-animal appeared suddenly in front of him, out of empty space. He could not believe his eyes, but stared at the creature for a long time in amazement.
They therefore thought that there was a great difference between what jurists call prohibited wrong and wrong in itself. Now, admitting this distinction to exist in men's minds, there is one large class of crimes and vices which is put in one category by most Anglo-Saxons and which was put in the other by the French Philosophers. These are the breaches of the sexual laws.
*Neurosis and Perversion.* A great part of the opposition to my assertion is explained by the fact that the sexuality from which I deduce the psychoneurotic symptoms is thought of as coincident with the normal sexual impulse. But psychoanalysis teaches us better than this. The symptoms are therefore partially formed at the cost of abnormal sexuality.
Such strongly-marked differences must be in some manner highly important; and we know that they have been acquired in some instances at the cost not only of inconvenience, but of exposure to actual danger. The belief in the power of sexual selection rests chiefly on the following considerations.
No author has to my knowledge recognized the normality of the sexual impulse in childhood, and in the numerous writings on the development of the child the chapter on "Sexual Development" is usually passed over.
During the past decade the general public has received some astounding revelations concerning the enormous extent of illicit sexual promiscuity, which is immorality according to our commonly accepted code of morals.
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