He set out precise directions for seated meditation: pick a quiet room; sit on a round cushion atop a mat; cross legs in either full-lotus or half-lotus; bring hands together, palms up, thumbs together; sit straight, leaning neither right nor left, forward nor back; close lips; keep eyes open, alert. He adds psychological directives: "Let go of all involvements and let myriad things rest. Do not think good or bad. Do not judge right or wrong. Stop conscious endeavor and analytic introspection."
An investigative intellect has its limitations, namely that whatever it perceives must be illuminated by its own corrupting light, borne of the arrogance to presume that the world is predisposed to be known (by it). The alternative to knowing is believing – faith. It comes when I have the maturity and humility to withdraw the glare of my critical mind, and simply join. This withdrawal and joining is repentance, because in the absence of thinking what do I do but weep tears of contrition? In taiji terms, hollow chest is the repentant heart: immersing in energy.