When the heart is right, "for" and "against" are forgotten.

If you have insight, you use your inner eye, your inner ear, to pierce to the heart of things, and have no need of intellectual knowledge.

There are no greater adversaries than yin and yang, because nothing in Heaven or on Earth escapes them. But it is not yin and yang that do this, it is your heart that makes it so.

He who does his work like a machine grows a heart like a machine and he who carries the heart of a machine in his breast loses his simplicity. He who has lost his simplicity becomes unsure in the strivings of his soul.

There is danger for the eye in seeing too clearly, danger for the ear in hearing too sharply and danger to the heart from caring too greatly.

Your mind must become one, do not try to understand with your ears but with your heart. Indeed, not with your heart but with your soul.