Three systems dominate the numerology landscape in the English-speaking world — Pythagorean, Chaldean, and popular Kabbalah numerology. Each has its followers. Each has drifted far from the initiatic roots that gave numerology its true power. Hermetic Numerology is different. Rooted in the Hermetic Kabbalah of the Great Initiates in the Occult Sciences, this is the complete initiatic system practiced with depth and precision across the Portuguese and Spanish-speaking world for decades, and documented in English here for the first time.