Search for tai chi quotes and you will find a great many attributed to Lao Tzu, Zhang Sanfeng, or simply “ancient Chinese proverb”, most of them unsourced and a fair proportion invented outright. It is a genre with a serious attribution problem.
What follows is a smaller collection, drawn from texts that actually exist: the classical tai chi writings, the Tao Te Ching, and the documented teachings of named masters. Translations of classical Chinese vary considerably, so the wordings here are common English renderings rather than definitive ones.
From the Tai Chi Classics
The tai chi classics are a small body of short texts, most dating from the nineteenth century or earlier, that form the theoretical foundation of the art. Attribution within them is itself contested — the most famous is credited to Wang Zongyue, and another to the semi-legendary Zhang Sanfeng — but the texts themselves are real and have been transmitted for generations.

“Four ounces deflects a thousand pounds.”
The single most quoted line in tai chi. It appears in the Treatise on Taijiquan attributed to Wang Zongyue, in a passage arguing that skill rather than strength decides an encounter. The full context is a rhetorical question: consider the saying about four ounces deflecting a thousand pounds — clearly this is not accomplished by force.
“In motion, the whole body should be light and agile, with all its parts connected as if threaded together.”
From the classic attributed to Zhang Sanfeng, and probably the most practically useful line in the entire literature. Connection is the thing the form is trying to build.
“When the opponent does not move, I do not move. When the opponent moves slightly, I move first.”
Usually attributed to Wu Yuxiang. It describes the responsive quality that push hands trains — not anticipation, but the ability to move within an opponent’s movement.
“A feather cannot be added, and a fly cannot alight.”
From Wang Zongyue’s treatise, describing sensitivity so refined that the smallest addition of weight would be detected. It is aspirational rather than descriptive, which is worth remembering.
“Insubstantial and substantial should be clearly differentiated.”
A recurring instruction across the classics, and the one most directly applicable to a beginner’s practice. Knowing at every moment which leg carries the weight is the foundation.
From the Tao Te Ching
Tai chi did not come from the Tao Te Ching, but its principles run parallel to it closely enough that the text is quoted constantly in tai chi settings. These lines are from the standard chapters and appear in every translation, though the wording differs.
“The softest thing in the world overcomes the hardest thing in the world.”
Chapter 43. The most direct statement of the principle tai chi is built on.
“Nothing in the world is softer or weaker than water. Yet for attacking what is hard and strong, nothing surpasses it.”
Chapter 78. The water metaphor recurs throughout tai chi instruction, usually in describing how the movement should feel.
“A man is born gentle and yielding. At his death he is hard and stiff… the hard and strong are the companions of death; the soft and yielding are the companions of life.”
Chapter 76. Quoted often in health-oriented tai chi contexts, and reasonably so.
From Named Masters
Attribution is firmer here, though translations still vary.
“Use mind, not force.”
One of Yang Chengfu’s Ten Essential Points, a short list of principles recorded by his students and among the most widely taught texts in Yang-style practice. The other nine cover sinking the shoulders and dropping the elbows, relaxing the waist, distinguishing full and empty, and continuity of movement.
“Sink the shoulders and drop the elbows.”
Also from the Ten Essentials, and the correction most beginners hear most often.
“Invest in loss.”
Associated with Cheng Man-ch’ing, who taught in Taiwan and later New York and did more than almost anyone to bring tai chi to the United States. The instruction is to accept being pushed over in practice rather than resisting to avoid it, because resisting teaches you nothing. It is the best piece of advice in this article and the hardest to follow.
A Note on Misattribution
A large proportion of the tai chi quotes circulating online fail basic scrutiny. Common patterns to watch for.
Quotes attributed to Zhang Sanfeng are attributed to a figure whose historical existence is itself uncertain — he is a semi-legendary character, and texts bearing his name were written centuries after he supposedly lived.
Quotes attributed to Lao Tzu that do not appear in the Tao Te Ching are extremely common, and the Tao Te Ching is short enough to check.
Generic wisdom in the shape of “the master said” or “an ancient proverb states” usually has no source at all, and inspirational-image culture has generated a great deal of it.
Rendering matters too. Classical Chinese is compressed and allusive, and a single line can be translated in several defensible ways. A quotation that sounds too neatly aphoristic in English has often been smoothed considerably.
None of which makes the sentiment wrong. But if you are going to put a line on a wall, it is worth knowing whether anyone actually said it. My own habit is to check anything I am tempted to repeat, and a surprising amount of it does not survive the check. For anyone who wants the primary texts rather than quoted fragments, the best tai chi books guide points to translations of the classics and reliable secondary sources.
The philosophy article covers the Taoist background these texts draw on, the grandmasters article covers the figures behind the attributed teachings, and the history of tai chi covers where the classics came from. More is collected in the tai chi history section.