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...
continue...
Accept and you become whole,
Bend and you straighten,
Empty and you fill,
Decay and you renew,
Want and you acquire,
Fulfill and you become confused.
The sage accepts the world
As the world accepts the Way;
He does not display himself, so is clearly seen,
Does not justify himself, so is recognized,
Does not boast, so is credited,
Does not pride himself, so endures,
Does not contend, so none contend against him.