Why is the sea king of a hundred streams? Because it lies below them... If the sage would guide the people, he must serve with humility. If he would lead them, he must follow behind. In this way when the sage rules, the people will not feel oppressed.
So sometimes things are ahead and sometimes they are behind; Sometimes breathing is hard, sometimes it comes easily; Sometimes there is strength and sometimes weakness; Sometimes one is up and sometimes down. Therefore the sage avoids extremes, excesses, and complacency.
It is better to do one's own duty, however defective it may be, than to follow the duty of another, however well one may perform it. He who does his duty as his own nature reveals it, never sins.