"Occultism is a word that derives from the Latin occultus meaning "hidden", "secret", or not easily perceived, and refers to the study of a deeper psychic and spiritual reality that extends beyond the world of senses and thought. Writing when the word had not acquired today's mixed connotations, H. P. Blavatsky defined true occultism as "altruism", the Great Renunciation of self, which is embedded in the principle that Divinity is concealed--transcendent yet immanent--within every living being."

https://theosophy.wiki/en/Occultism

[  OCCULTISM MAIN SECTION  ]