Wu Wei is probably the most complete guide on how to act in any situation, and how to achieve your goals.
Wu Wei is like gentle water flow which doesnt crush obstacles, but goes around them and erodes them.
It teaches the principle of non-contention and avoids using force to achieve a goal.
To put it simply, it says that if a goal can be achieved without force, it should be achieved without force. But if it cannot be achieved without force, then it probably shouldnt be achieved at all.
It teaches the principle of effortless action, which is not exactly a lack of action, but action which requires least effort and least force to achieve a goal.
Instead of trying to change a world by force or by sword, Wu Wei teaches that its better to change a world by mere word and persistence with personal example.
For example, if you lived in society of criminals, if you tried to make them obey you by using force, they might even kill you or brutally beat you.
But if you used the power of word to gently persuade them away from their path and make their path seem wrong to them, you would likely achieve greater effect and would convince one by one over time. The ones you convince would spread your message further, thus the society of criminals would gradually be eroded.
Wu Wei does teach that there are situations where force is necessary to achieve a goal, but in that case, one should use least amount of force possible or change his goals to those which can be achieved without force. If force must be used, it should at least be delayed until perfect moment.
Thus, Wu Wei is not about morality, but rather its about a way to achieve your goals and overcome obstacles not by destroying them as quickly as possible, but by a slow change.
It teaches the unity between yourself and your environment, so that you are never in conflict with your environment, or in minimal conflict with environment, when trying to achieve your goal.
