Thunder, Perfect Mind (Codex VI) found in the Nag Hammadi Library (page 172)
In Tune with the Infinite by Ralph Waldo Trine
Liber Novus – The Fertile Acre by Carl Jung (page 231)
Carl Jung’s reply to Bill Wilson “spiritum contra spiritus” – January 30, 1961
Bill Wilson’s Letter to Carl Jung – January 23, 1961