15. How Are the Eternal Forces of the Human Soul Investigated?
So that all philosophical talk, which is based on the observation of thoughts as they are, will never be able to say anything about the eternal powers of the human soul. Just as the fluorescence of matter, when it is removed as matter, naturally causes the fluorescence to cease, so anyone who is grounded in natural science cannot help but state the truth: when the body decays, its basis for the appearance of thoughts from the body also decays.
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