13. The Value of Extrasensory Knowledge for the Human Soul
Can we not see that this leads into the darkest depths of superstition, when science has so thoroughly demonstrated how mental and spiritual experience is dependent on physical experience, how this mental and spiritual experience grows as the human being develops through the years from childhood onwards? The soul and spiritual experience grows to the same extent that physical functions develop. We see how the spiritual life fades again in old age, when bodily functions decline or gradually become paralyzed. Furthermore, we see – and this is precisely thanks to the great advances in psychiatric research – how the mental functions are switched off with the injury of only one part of the human brain and nervous system. Do we not realize here how everything of a soul-spiritual nature is, in the most eminent sense, only an effect of the physical-corporeal? Now the spiritual researcher comes and explains that this spiritual-soul nature can be detached from the physical-corporeal.