Personality, individuality, consciousness, without Nature, is nothing; or, which is the same thing, an empty, unsubstantial abstraction. But Nature, as has been shown and is obvious, is nothing without corporeality. The body alone is that negativing, limiting, concentrating, circumscribing force, without which no personality is conceivable. Take away from thy personality its body, and thou takest away that which holds it together. The body is the basis, the subject of personality. Only by the body is a real personality distinguished from the imaginary one of a spectre. What sort of abstract, vague, empty personalities should we be, if we had not the property of impenetrability,--if in the same place, in the same form in which we are, others might stand at the same time? Only by the exclusion of others from the space it occupies does personality prove itself to be real. But a body does not exist without flesh and blood. Flesh and blood is life, and life alone is corporeal reality. But flesh and blood is nothing without the oxygen of sexual distinction. The distinction of sex is not superficial, or limited to certain parts of the body; it is an essential one: it penetrates bones and marrow. The substance of man is manhood; that of woman, womanhood. However spiritual and supersensual the man may be, he remains always a man; and it is the same with the woman. Hence personality is nothing without distinction of sex; personality is essentially distinguished into masculine and feminine. Where there is no thou, there is no I; but the distinction between I and thou, the fundamental condition of all personality, of all consciousness, is only real, living, ardent, when felt as the distinction between man and woman. The thou between man and woman has quite another sound than the monotonous thou between friends.