Mesmer as quoted in Pokazanyeva (2016). Pokazanyeva, Anna (June 2016). "Mind within Matter: Science, the Occult, and the (Meta)physics of Ether and Akasha". Zygon: Journal of Religion & Science. 51 (2): 318–346. doi:10.1111/zygo.12259.
Bregman (2016), p. 315. Bregman, J. (2016). "Synesius of Cyrene and the American "Synesii"". Numen: International Review for the History of Religions. 63 (2–3): 299–323. doi:10.1163/15685276-12341424.
Bregman (2016), p. 316. Bregman, J. (2016). "Synesius of Cyrene and the American "Synesii"". Numen: International Review for the History of Religions. 63 (2–3): 299–323. doi:10.1163/15685276-12341424.
Pokazanyeva (2016). Pokazanyeva, Anna (June 2016). "Mind within Matter: Science, the Occult, and the (Meta)physics of Ether and Akasha". Zygon: Journal of Religion & Science. 51 (2): 318–346. doi:10.1111/zygo.12259.
Hankins (2003). Hankins, James (2003). "Ficino, Avicenna and the Occult Powers of the Rational Soul". In Meroi, Fabrizio; Scapparone, Elisabetta (eds.). La magia nell'Europa moderna: Tra antica sapienza e filosofia naturale. Atti del convegno (Istituto nazionale di studi sul rinascimento) 23. Vol. I. Florence: Leo S. Olschki. pp. 35–52.