动亦定，静亦定，

无将迎，无内外。

——程颢《定性书》

动时也性定，静时也性定，定性没有顺物、逆物之分，

也没有内心、外表之别。

“When the movement enacts itself in accordance with the Tao, it is an equilibrium. When there is no movement, such status is also an equilibrium. Equilibrium is its own condition that does not distinguish between inside and outside.”

Dingxingshu by Cheng Hao

褚滨 画 Chu Bin