V. Concerning Reincarnation and Karma; Man's Astral Body and the Spiritual World; and Ahrimanic Beings
In the lower world what has just been described is only expressed through its effects. Man may strive to saturate himself in his thinking soul with the forces which recognise the spiritual world, and know themselves to live and have their being within it. But he may also turn away with his thinking soul from those forces, and only make use of his thought for laying hold of the physical world. Temptations to the latter course of action come from the Ahrimanic powers.
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ENGPP1922