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...
All the world says,
"I am important;
I am separate from all the world.
I am important because I am separate,
Were I the same, I could never be important."
Yet here are three treasures
That I cherish and commend to you:
The first is compassion,
By which one finds courage.
The second is restraint,
By which one finds strength.
And the third is unimportance,
By which one finds influence.