In this world, there is nothing softer or thinner than water. But to compel the hard and unyielding, it has no equal. That the weak overcomes the strong, that the hard gives way to the gentle - this everyone knows. Yet no one asks accordingly.
The things that have acquired unity are these: Heaven by unity has become clear; Earth by unity has become steady; The Spirit by unity has become spiritual; The Valley by unity has become full; All things by unity have come into existence.
We put thirty spokes to make a wheel: But it is on the hole in the center that the use of the cart hinges. We make a vessel from a lump of clay; But it is the empty space within the vessel that makes it useful. We make doors and windows for a room; But it is the empty spaces that make the room livable. Thus, while existence has advantages, It is the emptiness that makes it useful.
Arms are instruments of ill omen.... When one is compelled to use them, it is best to do so without relish. There is no glory in victory, and to glorify it despite this is to exult in the killing of men.... When great numbers of people are killed, one should weep over them with sorrow. When victorious in war, one should observe mourning rites.
The Master views the parts with compassion, because he understands the whole. His constant practice is humility. He doesn't glitter like a jewel but lets himself be shaped by the Tao, as rugged and common as a stone.