Published originally in limited circulation (likely late 1950s or early 1960s), The Voice of the Mind is not a beginner’s guide to meditation. It is a surgical text on mental ascesis.
The premise is simple yet brutally demanding: The human mind produces an endless internal monologue—opinions, judgments, memories, desires. Caesari calls this the "false voice." Beneath it lies the real Voice: the silent, intuitive, commanding language of the Universal Mind (or, in hermetic terms, the Akh).
Before diving into the technique, it is important to find a reliable copy of the text. "The Voice of the Mind" is a classic vocal pedagogy text, often out of print in physical form, making digital copies popular.
Caesari’s work is central to the Bardonist tradition. Visit forums like Bardonists.com or the Franz Bardon Academy (run by Martin Faulks). In the "Primary Texts" or "Supplements" sections, you will often find annotated PDFs of The Voice of the Mind with user-generated updates that mirror the 1968 material.