This article is excerpted from a Christian article. The original text aims to refute the doctrines of the Roman Curia regarding spiritualism. Its reference value on "spiritualism" is limited. Here, we only extract some descriptive rather than argumentative texts.
... The doctrine of the immortality of the soul has paved the way for modern spiritualism (Note: if spiritualism is设定 in novels etc., then the prerequisite is the immortality of the soul. Based on this point, other relevant systems related to the soul should also be valid in the novel world, such as soul possession, etc.).