Taoteching 9

From CleanPosts

"Gabhopper, why do you stop poruing when a cup has been filled?"

"Because a cup can only accept so much liquid and no more, Xena. Everyone knows that."

"And why do you stop sharpening a sword after it has acquired a keen edge?"

"Because the sword can only accept so much sharpening and no more, Xena. Everyone knows that."

"If everyone knows these things, then why do they go on devoting their life to acquiring more and more wealth? Do they not see that every person can only accept so many things, and no more?"