Two monks were arguing about a flag.
One said, “The flag is moving.”
The other said, “The wind is moving.”
The sixth patriarch happened to pass by.
He said, “Not the wind, not the flag, mind is moving.”
In Buddhist tradition, a koan is a question or a statement that can’t be understood logically. Zen Buddhist monks meditate on koans as a way to abandon dependence on reason in their pursuit of enlightenment. A koans can’t be grasped by logic, or explained in words. They float through our mind at odd times, they seem strangely relevant to widely diverse situations… Aha?