Another of Ta-hui's objections to the Silent Illumination school seems to have been its natural drift toward quietism, toward the divorcing of men from the world of affairs. This he believed led nowhere and was merely renouncing humanity rather than illuminating it.
These days there's a breed of shaven-headed outsiders [i.e., rival masters] whose own eyes are not clear, who just teach people to stop and rest and play dead. . . . They teach people to "keep the mind still," to "forget feelings" according to circumstances, to practice "silent illumination." . . . To say that when one has put things to rest to the point that he is unawares and unknowing, like earth, wood, tile, or stone, this is not unknowing silence—this is a view of wrongly taking too literally words that were (only) expedient means to free bonds.17
He seemed to be counseling never to forget that meditation is only a means, not an end. Instead Ta-hui advocated meditating deeper and ever deeper into a koan, focusing on the words until they "lose their flavor." Then finally the bottom falls out of the bucket and enlightenment hits you. This "Introspecting the Koan" form of Ch'an (called Kanna Zen by the Japanese) became the standard for the Rinzai sect, whose students were encouraged to meditate on a koan until it gradually infiltrated the mind. As one commentator has explained, "The essential is to immerse oneself patiently and wholeheartedly in the koan, with unwavering attention. One must not be looking for an answer but looking at the koan. The 'answer,' if it comes, will come of its own accord."18 As described by Ta-hui:
Just steadily go on with your koan every moment of your life. . . . Whether walking or sitting, let your attention be fixed upon it without interruption. When you begin to find it entirely devoid of flavor, the final moment is approaching: do not let it slip out of your grasp. When all of a sudden something flashes out in your mind, its light will illumine the entire universe, and you will see the spiritual land of the Enlightened Ones. . . .19
The important thing is to concentrate totally on a koan. This concentration need not necessarily be confined to meditation, as Ta-hui illustrates using one of the more celebrated one-word statements of Yun-men.
A monk asked Yun-Men, "What is Buddha?" Yun-Men said, "A dry piece of shit." Just bring up this saying. . . .Don't ask to draw realization from the words or try in your confusion to assess and explain. . . . Just take your confused unhappy mind and shift it onto "A dry piece of shit." Once you hold it there, then the mind . . . will naturally no longer operate. When you become aware that it's not operating, don't be afraid of falling into emptiness. . . . In the conduct of your daily activities, just always let go and make yourself vast and expansive. Whether you're in quiet or noisy places, constantly arouse yourself with the saying "A dry piece of shit." As the days and months come and go, of itself your potential will be purified and ripen. Above all you must not arouse any external doubts besides: when your doubts about "A dry piece of shit" are smashed, then at once doubts numerous as the sands of the Ganges are all smashed.20
Although Ta-hui was a strong advocate of the koan, he was staunchly against its being used in a literary sense. Whenever a student starts analyzing koans intellectually, comparing one against another, trying to understand rationally how they affect his nonrational intelligence, he misses the whole point. The only way it can work is if it is fresh. Only then does it elicit a response from our spontaneous intelligence, our intuitive mind.
But the Sung trend toward intellectualism was almost irresistible. The prestige of the Chinese "gentleman"—who could quote the ancient poets, compose verse himself, and analyze enlightenment—was the great nemesis of Ch'an.
Gentlemen of affairs who study the path often understand rationally without getting to the reality. Without discussion and thought they are at a loss, with no place to put their hands and feet—they won't believe that where there is no place to put one's hands and feet is really a good situation. They just want to get there in their minds by thinking and in their mouths to understand by talking—they scarcely realize they've already gone wrong.21