Lecture IV
Those, however, who are dogmatic followers of the natural scientific world view today do not realize this. They have no desire to listen to initiation science. In consequence, they begin to speculate about what is hidden behind color, warmth, and so forth, and arrive at a material construction of the world. However well founded this construction may seem for example, the modern theory of ions—it is always the result of speculation. We must not speculate about what is behind the world of the senses; we may only gain experiences there by means of a higher spiritual world. Otherwise, we must content ourselves to remain within the phenomena. The sense world is a sum of phenomena and must be comprehended as such.
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