The supersensible in the world
That the supersensible world is truly supersensible and beyond the measure of all scientific instruments is evident from this following quote:
"We must not fall into the error of certain theosophical circles, and imagine that the etheric and astral bodies as consisting simply of finer substances than our present in the physical body. For that would be a materialistic conception of these higher members of man's nature. The etheric body is a force-form; it consists of active forces and not a matter. The astral or sentient body is a figure of inwardly moving, colored, luminous pictures."
Rudolf Steiner. "The Education of the Child in light of Anthroposophy." London: Rudolf Steiner Press, 1965. Pages 13-14.
Translated by George and Mary Adams