@nyrath @SFFMagazineCovers Yes, Campbell was very interested in powers of the mind, strange ideas about ESP and so on.
Also, L. Ron Hubbard *did* write science fiction, so he was in the SF world. I have never read any of his works, so I don't know if they were any good at all. Some golden age SF ideas seem to have been turned into the lore of scientology.
It also weems like Hubbard talked about starting a religion to get rich: https://tonyortega.org/2016/01/19/when-the-feds-tracked-down-l-ron-hubbards-boast-about-getting-rich-by-creating-a-religion/