Ficino, Talismans, and the Fifth Element.
“For Ficino the universe was made up of mystical links, or correspondences, that continuously interacted. The seven planets influenced the sublunary world with their qualities through the mystical links. The fundamental point in Ficino’s magic was that the magician, with knowledge of these mystical links, could manipulate them, and thus cause results according to his will. […]
The use of talismans as a means to attract the influence of planets was viewed as a highly powerful aid, but also a very dangerous one, since the Church condemned its use. Ficino was careful in advising the use of talismans, but, as Yates pointed out, he did discuss talismans in his work De vita coelitus comparanda. […]
According to Walker, the magic of Ficino used the human spiritus as its medium through which it worked. The spirit was the link between body and soul, and the human functions of sense-perception, imagination, and motor activity were connected to the spiritus. The human spiritus was made up of the four elements, and it formed a corporeal vapor that flowed from the brain, where it had its center, through the nervous system. Furthermore, the human spirit was connected to the spiritus mundi, which mostly consisted of the fifth element—quinta essentia or ether.”
–Henrik Bogdan, Western Esotericism and Rituals of Initiation, 2007, pg. 55.