Do nothing, and leave nothing undone. ["Doing nothing" is what happens when the doer disappears, it isn't something that one does or chooses not to do.]
LaoziThe fourth (of the four cardinal virtues) is supportiveness: this manifests as service to others without expectation of reward. (Paraphrased: Such service is not a mere conforming to some external rule of behavior, but instead a manifestation of your original nature).
LaoziTo the good I would be good; to the not-good I would also be good, in order to make them good.
Laozi