Steiner's teaching that a man's etheric body is feminine and a woman's is masculine, so every person is inwardly double-sexed.
The gender of the etheric body is Rudolf Steiner's teaching that the life-body carries the sex opposite to the physical body: a man's etheric body is feminine, a woman's masculine. Each human being is therefore double-sexed, complete only when the outer pole and the hidden inner pole are taken together. Steiner gave this as spiritual science's answer to what his age called the Woman's Question.
In Steiner's Own Words
In every human being, this is a fact, the etheric body consists of two parts; the etheric body of a man, as he lives among us, shows itself to have feminine features, and the etheric body of a woman to have masculine features. Many facts in life become clearer when we recognise that in a man there is something of the feminine nature, and in a woman, a more masculine nature. The human soul forms for itself a body with two poles, just as a magnet does. Hence, with regard to those emotions which are associated with the etheric body, devotion, courage, love, a woman can clearly evince masculine characteristics, and a man womanly characteristics.
What it Means Today
Steiner's etheric polarity has its closest modern echo in the analytical psychology of Carl Gustav Jung. In Aion: Researches into the Phenomenology of the Self (1951, Collected Works volume 9, part II), and earlier in Two Essays on Analytical Psychology, Jung set out the anima, the unconscious feminine figure carried by a man, and its counterpart the animus, the masculine figure carried by a woman. Where Steiner located that contrasexual nature concretely in the etheric or life-body, Jung located it in the unconscious psyche, yet both men taught that no person is single-sexed within, and both read the soul's growth as a marriage of the two poles. Steiner spoke in Berlin in 1905; Jung published Aion in Zurich in 1951. The two arrived at the same map of the inner double from opposite methods, clairvoyant observation and clinical dream analysis, which makes their agreement the stronger witness.
Thalira synthesis: where Jung treats the contrasexual figure as an image to be integrated in dream and active imagination, Steiner treats it as a real formative organ, so the etheric gender is something a person builds and refines through devotion, courage, and love rather than merely meets in the dark. Read together, the two lineages name a single fact, that the path past the Woman's Question runs not through erasing the sexes but through each person owning the hidden pole already woven into their own life-body. Steiner closed the 1905 lecture by replacing Goethe's Eternal-Feminine with a phrase meant for both sexes at once: the Eternal-Human bears us aloft.
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