It comes from "Tai Chi Pictures" written by Zhou Dunyi in the middle Song Dynasty.
Original text: From Wuji to Tai Chi. Tai Chi generates yang when it is moving, it is still when it is extremely moving, it is yin when it is still, and it moves when it is extremely still. Movement and stillness are mutually rooted. Divide yin and yang, and the two rituals are established.
Interpretation:
The universe was infinite at the beginning, and then evolved into Taiji, that is, from infinitesimal to infinite. This process of movement is called movement, and infinite movement is Yang. It can be understood that energy must be generated during the movement and development process, so there is light, so it is called Yang.
When the universe develops to infinity and is close to infinity, it is actually still developing, but compared with the previous development speed, it is almost static, so it is said that the development (movement) reaches the extreme and is static. (relative). At this time, the energy of development has weakened, so the energy is reduced and there is less light, so it is Yin.
When we think it is completely motionless, we can develop that it is still moving. This is also relative. It is also consistent with human findings. Humans originally thought that the universe was infinite, but later discovered that it was still expanding. Movement comes from stillness, and stillness comes from movement. This is actually the theory of relativity. Yin and Yang are divided into two forms.
Extended information:
"Tai Chi Pictures" is a philosophical work by Zhou Dunyi, a philosopher in the Song Dynasty. The full text is only 249 words. Inspired by "Book of Changes·Xici Zhuan", Zhou Dunyi explained his cosmology in "Tai Chi Illustrations": "Wuji gives rise to Tai Chi, Tai Chi moves to produce Yang, and moving poles give rise to stillness. Static poles move again, and each movement leads to stillness. It is its root; it divides yin and yang, and the two principles stand together."
It is believed that "Tai Chi" is the origin of the universe, and that human beings and all things are composed of the interaction of yin and yang and the five elements of water, fire, wood, metal and earth. of. The five elements are unified in Yin and Yang, and Yin and Yang are unified in Tai Chi.
At the same time, "Tai Chi Pictures" highlights the value and role of people. The article advocates: "Only people are the most intelligent when they get their beauty." This means that only people are the wisest when they get their beauty. .
"Tai Chi Illustrations" has a great influence on later generations, and there are many versions. Zhu Xi's "Records of Modern Thoughts" and "Song and Yuan Studies" compiled by Huang Zongxi and others are all included in "Tai Chi Illustrations".
Baidu Encyclopedia-Tai Chi Illustrations