Shape clay into a vessel;
It is the space within that makes it useful.
Cut doors and windows for a room;
It is the holes which make it useful.
Therefore benefit comes from what is there;
Usefulness from what is not there.
Does one scent appeal more than another? Do you prefer this flavor, or that feeling? Is your practice sacred and your work profane? Then your mind is separated: from itself, from oneness, from the Tao.
The Way of Tao is this: It strives not, but conquers; It speaks not, but all is made clear; It summons not, but its house is crowded; It contrives not, but the design is perfect.
My teachings are easy to understand and easy to put into practice. Yet your intellect will never grasp them, and if you try to practice them, you'll fail. My teachings are older than the world. How can you grasp their meaning? If you want to know me, look inside your heart.