Nan-in, a Japanese master during the Meiji era (1868-1912), received a university professor who came to inquire about Zen.
Nan-in served tea. He poured his visitor's cup full, and then kept on pouring.
The professor watched the overflow...
Is the action of nature not unlike drawing a bow?
What is higher is pulled down, and what is lower is raised up;
What is taller is shortened, and what is thinner is broadened;
Nature's motion decreases those who have more than they need
And increases those who need more than they have.
It is not so with Man.
Man decreases those who need more than they have
And increases those who have more than they need.