The calculations of the ancients applied equally to the spiritual progress of humanity as to the physical. Their belief in the constant and all-potent influences of the planets upon the fortunes of humanity draws close correspondence between the cycles of nature and of mankind.
- Siphra Dzeniouta (The Book of Concealed Mystery) – Kabbalah
- The Popol Vuh (The Mythic and Heroic Sagas of the Kichés of Central America) – Kiche Manuscript
- Phaedrus – Plato
- Timaeus – Plato
- Aitareya Brahmanam – Vedas
