Most Beloved
Parsons adhered to the occult philosophy of Thelema, which had been founded in 1904 by the English occultist Aleister Crowley following a spiritual revelation that he had in Cairo, Egypt, when—according to Crowley's accounts—a spirit being known as Aiwass dictated to him a prophetic text known as "The Book of the Law". Prior to becoming aware of Thelema and Crowley, Parsons' interest in esotericism was developed through his reading of "The Golden Bough" (1890), a work in comparative mythology by Scottish social anthropologist James George Frazer. Parsons had also attended lectures on Theosophy by philosopher Jiddu Krishnamurti with his first wife Helen, but disliked the belief system's sentiment of "the good and the true". During rocket tests, Parsons often recited Crowley's poem "Hymn to Pan" as a good luck charm. He took to addressing Crowley as his "Most Beloved Father" and signed off to him as "thy son, John".