Topic: Plotinus

Harper outlines the central tenets of the secret tradition, specifically the Neoplatonic view that the entire cosmos is composed of "soul stuff." This perspective posits that soul is a substrate that is both material and non-material, similar to the different states of water. A key doctrine discussed is the correspondence between the macrocosm (the universe) and the microcosm (the individual), suggesting humans are differentiated portions of a unified cosmic soul.

A transition from an intellectual, Aristotelian mindset to a mystical, Platonic one is described as a natural part of the ascension process. The Neoplatonic schools, featuring thinkers like Plotinus, Proclus, and Porphyry, are recommended as the roots of mystical wisdom. This evolution is likened to the transmutation of lead into gold, where the mental mind eventually relinquishes control to the higher mind of illumination.