“What lies enclosed in the intellect, comes to development in the world-soul as logos, fills it with meaning and makes it as if intoxicated with nectar.”[262] Nectar is analogous to soma, the drink of fertility and of life, also to sperma. The soul is fructified by the intellect; as oversoul it is called heavenly Aphrodite, as the undersoul the earthly Aphrodite. “It knows the birth pangs,”[263] and so on. The bird of Aphrodite, the dove, is not without good cause the symbol of the Holy Ghost. This fragment of the history of philosophy, which may easily be enlarged, shows the significance of the endopsychic perception of the libido and of its symbolism in human thought. In the diversity of natural phenomena we see the desire, the libido, in the most diverse applications and forms. We see the libido in the stage of childhood almost wholly occupied in the instinct of nutrition, which takes care of the upbuilding of the body. With the development of the body there are successively opened new spheres of application for the libido. The last sphere of application, and surpassing all the others in its functional significance, is sexuality, which seems at first almost bound up with the function of nutrition. (Compare with this the influence on procreation of the conditions of nutrition in lower animals and plants.) In the territory of sexuality, the libido wins that formation, the enormous importance of which has justified us in the use of the term libido in general. Here the libido appears very properly as an impulse of procreation, and almost in the form of an undifferentiated sexual primal libido, as an energy of growth, which clearly forces the individual towards division, budding, etc. (The clearest distinction between the two forms of libido is to be found among those animals in whom the stage of nutrition is separated from the sexual stage by a chrysalis stage.) From that sexual primal libido which produced millions of eggs and seeds from one small creature derivatives have been developed with the great limitation of the fecundity; derivatives in which the functions are maintained by a special differentiated libido. This differentiated libido is henceforth desexualized because it is dissociated from its original function of egg and sperma production; nor is there any possibility of restoring it to its original function. Thus, in general, the process of development consists in an increasing transformation of the primal libido which only produced products of generation to the secondary functions of allurement and protection of the young. This now presupposes a very different and very complicated relation to reality, a true function of reality, which, functionally inseparable, is bound up with the needs of procreation. Thus the altered mode of procreation carries with it as a correlate a correspondingly heightened adaptation to reality.[264]