The Greater Mysteries lasted nine days in Boedromion (September). The initiates walked in procession from Athens to Eleusis, fasted, drank the kykeon, and entered the Telesterion — the great hall of revelation. What happened inside was the best-kept secret in antiquity; no one who saw it ever told. Hex 20 (Contemplation) is the state the initiates were brought to: wind over earth, the watchtower perspective, seeing the pattern from above. Hex 55 (Abundance) is what they saw: thunder and lightning together, fullness so overwhelming it cannot last. Aristotle said the initiates did not learn something — they experienced something. The I-Ching's Hex 20 makes the same distinction: 'Contemplation of the divine meaning underlying the workings of the universe gives to the man who is called upon to influence others the means of producing like effects.'