What is Tai Chi? It is generated from Wu Chi. It is the Mother of Yin & Yang. When it Moves, it Divides. At Rest, it Reunites.
No Excess, No Deficiency. — Treatise on Tai Chi Chuan by Wang Tsung-Yueh
Excerpts from Tao and T'ai Chi Kung by Robert C. Sohn
.... in general, Taoist thought is 'transcendental' philosophy and not simple easily-grasped rules of behavior. Grasping the Taoist point of view requires the ability to evaluate conceptually and manipulate a multitude of variables leading to the unification of all ideas in the universal Tao....
The Teh, as in Tao Teh Ching, means Virtue in the ancient Greek sense of 'perfection.' So it is taught that when a man strives to be in accord with the Tao, his efforts will cause being transformation and he will eventually attain the state of human perfection or Teh. For the Teh of a man is the individual reflection of the Tao of the Universe. When a man has Teh, he is in tune with the Universal Tao. When he dies he unites with the Universe. As long as he is alive the Tao reflects in him as Teh....
... What is it to limit the plentifulness of the heart? Based on Lao Tse's comment that 'Ever desiring, one can see the manifestations,' and on the Chinese medical principle that the 'Heart harbors the human soul,' it is reasonable to assume that the plentifulness of the heart is 'desire,' and therefore we are being told to control desire. The control of desire, which is essentially the control of the personal self, or false self (ego), is the state of Virtue or perfection. Self-control leads to the Tao.
Taoism, like all profound philosophical systems, is based on the assumption that the underlying state of reality is nothing — no-thing. Therefore, the first symbol of the Taoist creative process is an empty circle. This empty circle represents Wu Chi. Wu means 'empty' or 'void'; Chi means 'limit. Thus when we have the empty limit, the final no-thing; the ultimate emptiness.
The Universe is Manifest Through Motion.
All teachings, whether scientific or philosophical, begin with the idea of an unspecified event which must have occurred so that the process of the Universe could begin. The simplest expression of this — without scientific hypotheses about energy explosions or mystical symbolism designed to evoke a sense of higher knowledge — is to say, 'In the beginning, there is movement.' As It is always in Its unmanifest state, It is ultimately quiescent; It is not moving, It is not active. The Gyana yogis analyze the nature of the Absolute by a series of questions such as, 'Is the Absolute the God Shiva?' 'Neti, neti,' they answer; 'It is not limited to that.' When you have totally negated everything, you are left with the Void, Wu Chi. That is the Absolute. - pages 4 - 6
Ever desireless, one can see the mystery.
If an aspirant of Eternal Truth has conquered his worldly nature by subduing and conquering the passion and desire of life, and has focused his being through development of body, mind and emotions, thereby coming into the state of harmony in all his centers, he has attained the state of desirelessness. Such a being can comprehend the true reality that is obscured by the world of illusion produced by the continuation of desire.
Ever desiring, one can see the manifestations.
As long as objects draw the attention, as long as man's desire is not controlled, just so long will one see the manifest material universe as opposed to its underlying real source. This is not, as many like to think, a statement about morality and right behavior. It is about dissolution of any emotional bindings to the world of man's experience and refocusing attention on the incorporeal world.
.... In sum, from within the Wu Chi, the ultimate Reality, there manifests li, ideation. From the idea, there is ch'i, the will to manifestation. From that will, there manifests Qi, existence, substance, matter, energy, form.
These three — li, ch'i and Qi — Idea, Will and Energy/matter, correspond to the Hindu trilogy of Satchitananda — Existence, Consciousness, Bliss.
Bliss and Will are the emotional nature. Consciousness is Idea, and Existence is Energy/matter. - pages 13-19