In counteracting the false dhyana of mere empty-mindedness, Hui-neng compares the Great Void to space, and calls it great, not just because it is empty, but because it contains the sun, moon, and stars. True dhyana is to realize that one’s own nature is like space, and that thoughts and sensations come and go in this “original mind” like birds through the sky, leaving no trace. Awakening, in his school, is “sudden” because it is for quickwitted rather than slow-witted people. The latter must of necessity understand
