People in their handlings of affairs often fail when they are about to succeed. If one remains as careful at the end as he was at the beginning, there will be no failure.
Nothing in the world is more flexible and yielding than water. Yet when it attacks the firm and the strong, none can withstand it, because they have no way to change it. So the flexible overcome the adamant, the yielding overcome the forceful. Everyone knows this, but no one can do it.
When a country is in harmony with the Tao, the factories make trucks and tractors. When a country goes counter to the Tao, warheads are stockpiled outside the cities. There is no greater illusion than fear, no greater wrong than preparing to defend yourself, no greater misfortune than having an enemy. Whoever can see through all fear will always be safe.
The cords of passion and desire weave a binding net around you. Worldly confrontation makes you stiff and inflexible. The trap of duality is tenacious. Bound, rigid, and trapped, you cannot experience liberation.
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.