Better stop short than fill to the brim.
Oversharpen the blade, and the edge will soon blunt.
Amass a store of gold and jade, and no one can protect it.
Claim wealth and titles, and disaster will follow.
Retire when the work is done.
This is the way of heaven.
(trans. by Gia-Fu Feng and Jane English)
Source: Tao Te Ching