Protoplasm, the only living substance, is found everywhere in the visible world and its universality is symbolical of the invisible worlds as well. Transparent, colorless, it contains within itself the mystery of reproduction. It forms the basis of the vegetable and the animal kingdoms. It is seen in bone and muscle and fibrous tissue, and protoplasm may be said to contain within its cells the principles of both sexes. It is not sexless, but bi-sexual; not neuter but masculine-feminine. Every form of life has sex, and in some rare instances both sexes are present in one form. This does not mean that there is another phase of sex unclassified, but rather it proves the union in one _Whole Entity_ of the two distinct principles, and by this fact of the "twain made one" we may know that Sex is the very crux of the cosmic law; that not only does it survive the mere physical expression of the law, but that the object of the sex-function is the spiritual union of the two principles, a male and a female entity, forming one complete and perfect Being--the true representative of the bi-une Being whom we know as God. Absolute and perfect union is possible only at the center, the crux, of Being. This truth is represented by the algebraical X, the symbol of spiritual sex-union. Therefore sex relationships which do not have for their crux spiritual as well as temperamental affinity, are not final, or eternal, however beautiful they may be; and there are many sex-relationships which are pure and sacred even though they do not fulfil this highest of all relationships, that of spiritual counterparts. Let us consider for a moment the universality of Sex as we see it expressed in all the variety of forms and throughout all the species, and in so doing we may trace the ever upward trend of the law of sex-attraction, and discover, if we have the eyes to see, the evident plan and purpose of the cosmic law as it tends toward completement and perfection in the type of the man-god whom the world has long looked for and who we believe is here. If we look at the expression of Sex from the viewpoint of the physical only, instead of basing our observations from the interior, the spiritual, outward to the physical, we might conclude that the function of sex was designed for no other purpose than that of procreation, since care of the young increases with the upward trend of life-manifestation.