According to the ancient doctrine, Spiritual evolution proceeds in cycles (in a way similar to the physical world). Humanity achieves its greatness, descends again, till it reaches the lowest point, and it reasserts itself to mount up once more, arriving at the higher point than before it descended.
- 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
