"We must first understand that all sacred writings are supposed to be sealed with seven seals. In other words, it requires seven complete interpretations to understand fully the meaning of these ancient philosophic revelations which we have liked to call Holy Writ." - Anatomy of Man Manly P. Hall pg. 3-4
"It should be remembered that ancient myths must be interpreted by seven different keys. Therefore each fable signifies the seven different phases of universal development." - Atlantis: An Interpretation Manly P. Hall pg.17
The Seven Keys
Numerology
Anatomy
Alchemy
Sacred Geometry
Astrology
Astronomy
"...for example, to study the life of Christ in the light of astronomy, for he becomes the sun, and his disciples the twelve signs of the zodiac. Among the constellations we find the scenes of his ministry, and in the precession of the equinoxes the story of his birth, growth, maturity, and death for men. Again, the tortured chemicals in the retort further reveal to us the life of the Master, for with the key to chemistry the Scriptures become another book. In this particular work, however, we can only concern ourselves with the relationship of these allegories to the human body." -Anatomy of Man Manly P. Hall pg. 5