A while back I heard something about the 'Great Doubt'. I think it is a Zen thing? Does anyone know what it is and how it might compare to the doubt that all human beings feel from time to time?
I think Stephanie of Treeleaf puts it well:
I used to feel very confused as to what set "Great Doubt," the virtue, apart from "skeptical doubt," one of the traditional Five Hindrances of Buddhism. I have since learned from my experience that skeptical doubt is more of an automatic resistance to things, a destructive tendency to pick apart and reject even what is good, that bats away and refuses to entertain anything that comes along and does not fit within parameters of what has been determined to be acceptable or true. Whereas Great Doubt is the presence of a question or questions that push us beyond the normal boundaries of our thought processes, beyond the answers that usually comfort and reassure us.
This matches my own experience. Regular doubt is based on fear. It is the lack of trust or courage to let go of our conceptual/emotional ground and to go all the way into the quest for Truth. In contrast, Great Doubt (Japanese "gidan" or "dai-gidan"; Chinese "yituan"/"dayituan") is suspending one's judgement and giving up all grasping to certainty, all attachment to preconceived notions - including one's assumptions about the nature of dharma, the goal, everything.
Regular doubt is the mind of "I know", the mind of calculation and negotiation, the "setting sun" mind, flat mind, logical mind, wavering mind.
Great Doubt is the mind of "only don't know", is the "beginner's mind", the ego-less mind, the "Great Eastern Sun", the vulnerable mind, the mind that is completely open, the mind combining the opposites.
Regular doubt is an obstacle on the path, Great Doubt is the door to Freedom.
Great Doubt: Getting Stuck & Breaking Through -- The Real Koan by Jeff Shore is a lecture on that topic.
Some quotes from its introduction:
In Zen practice, the essential point is to arouse Doubt. What is this Doubt? For example, when you are born, where do you come from? You cannot help but remain in doubt about this. When you die, where do you go? Again, you cannot help but remain in doubt. Since you cannot pierce this barrier of life-and-death, suddenly the Doubt will coalesce right before your eyes. Try to put it down, you cannot; try to push it away, you cannot. Eventually this Doubt Block will be broken through and you’ll realize what a worthless notion is life-and-death – ha! As the old worthies said: “Great Doubt, Great Awakening; small doubt, small awakening; no doubt, no awakening.”
Perhaps Great Doubt can be considered an essential element of any religious practice – without it, why practice? It’s clearly central to Buddhism: look at the life of Gotama (Skt.: Gautama) Buddha, his great renunciation or leaving home, his struggle and Awakening. Through it all, his quest to resolve it is unmistakable.
[...] Japanese Zen master Bankei[盤珪 1622-93] is not criticizing Great Doubt – he himself was spurred on by it since childhood. He is criticizing unnatural, forced, contrived, made-up doubt based on someone else’s words or experience.