1 Going back to its origin, the term “quiet sitting” refers to a method of self-cultivation that was practiced by China’s ancient Daoists [Taoists]. They sat in quietude seeking to nurture and protect their life force. Later Daoists referred to it as “refining the elixir.”
2 The Chan [aka Zen] school of Buddhism also teaches quiet sitting. What I teach is the “Chinese Original Quiet Sitting.”
3 The Confucian process of self-cultivation, which goes through stages of “Settling, Quietude, Tranquility, Reflection, and Attainment”  also originated from quiet sitting.
4 The Confucians Cheng Yi [1033-1107 A.D.] and Zhu Xi [1130-1200 A.D.] of the Song Dynasty incorporated Chan ideas in their thoughts and advocated quiet sitting.
5 In the Ming Dynasty, Yuan Liaofan adopted Buddhist techniques in writing his Desideratum of Quiet Sitting.
6 Quiet sitting is “dazuo” which literally means sitting quietly. Dazuo’s original meaning is “to sweep the ground of the mind and to sit until there is a heaven within one’s self-nature.”
7 The first part is already hard to accomplish. It requires a person to assume a seated posture, rein in the worldly mind, and cast out illusory notions.
8 Once the illusions are cast out, there are still countless “flights of fancy” that keep coming and going.
9 As for “sitting until there is a heaven within one’s self-nature,” this is even more difficult.
First Lecture of Chinese Original Quiet Sitting, April 28, 1979
 "Settling, quietude, tranquility, reflection, and attainment" are the five stages of self-cultivation described in the first chapter of The Great Learning, one of the Confucian Four Books.
 Yuan Liaofan's (b.1535-1608) Desideratum of Quiet Sitting is a treatise in six chapters on the Tiantai Meditation techniques that Yuan learned from his teachers, Master Yungu and Dharma Master Miaofeng.