Drucker and Zen

Naturally, I like this by Drucker:
"Another common mistake is to patch up the old rather than to go all-out for the new...It is one of the crucial tasks of the executive to know when to say, 'Enough is enough. Let's stop improving. There are too many patches on those pants.'"

And a Zen story via Success from the Nest:

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 until he no longer could restrain himself. “It is overfull. No more will go in!”

“Like this cup,” Nan-in said, “you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup?”