"Mysteriously, wonderfully, I bid farewell to what goes, I greet what comes; for what comes cannot be denied, what goes cannot be detained."
"Perfect Yin is stern and frigid; Perfect Yang is bright and glittering.
The sterness and frigidty come forth from heaven, the brightness and glitter emerge from the earth; the two mingle, penetrate, come together, harmonize, and all things are born therefrom."
Chuang Tzu explined how Tao seeks out and moves through the 'empty spaces of life, seemingly without effort, with this example: there was a butcher whose cleaver never got dull. When pressed for his secret, he explained: "Between the bones of every joint there is always some space, otherwise there could be no movement. By seeking out this space and passing through it my cleaver lays wide the bones without touching them."