The Circle of Power consists of a series of articles that Dion Fortune published under the title "The Circuit of Power," in which she analyzes the principle of Polarity, a principle she claims is one of the lost secrets of Western occultism.

In these articles, her complex thought spans the Western and Eastern traditions and, through in-depth comparative analysis, seeks Polarity in Kabbalistic symbolism, in tantric yoga, in psychic centers, in the rise of kundalini, in astral light, and in the power of self-suggestion, as well as in the magnetic effects of sexual energy.