What did Dick read about Bruno and Hermeticism?
Giordano Bruno and the Hermetic Tradition
(discuss how Yates invented a Hermetic tradition in a speculative move worthy of PKD)
Giordano Bruno; his life and thought
Dorothea Waley Singer
Giordano Bruno by Walter Pater
PKD doesn't seem to have been interested in Crowley or Golden Dawn Occultism, he was interested in Jewish Kabbalah, maybe through a Marin New Age filter, probably through a bit of a "Christian Cabala" filter, but not doing occultist "Qabala"
From the Closed World to the Infinite Universe
not available to PKD but great sources on Bruno
The Concept of Contraction in the Philosophy of Giordano Bruno
Giordano Bruno: Philosopher / Heretic
Giordano Bruno and Renaissance Science
In her Essays on Giordano Bruno, Gatti writes, "One of the most original aspects of Coleridge's interest in Bruno regarded his dialectic." (interesting in terms of McKee's argument that Dick's notion of a dialectical divine is one of his most intriguing contributions to theology--although of course Dick would say that it's also found in Boehme...)
Bruno's Cause, Principle, and Unity--and Essays on Magic
Bruno's Cabala of Pegasus
Giordano Bruno and the Kabbalah