Daodejing Poem 29

Using violence to conquer the whole world, from what I see, the executioner will never succeed. The world is a sacred vessel not to be owned by anyone. Tinkering to conquer will spoil, usurpers will lose it. For indeed things either move forward or lag behind, either hot or cold, either strong or weak, either vigorous or worn out. So the Sage forgo extreme inclinations, sweeping judgments and a life of excesses.

This message is to say that only non violence then can conquer the world. That is inaction or 'wu wei'.