My cup shouldn't runneth over

Here is a famous parable. You can find various forms of it on the Web...

A university professor went to visit a famous Zen master. While the master quietly served tea, the professor talked about Zen. The master poured the visitor's cup to the brim, and then kept pouring. The professor watched the overflowing cup until he could no longer restrain himself. "It's overfull! No more will go in!" the professor blurted. "You are like this cup," the master replied, "How can I show you Zen unless you first empty your cup."

To receive, you have to be empty. I want to remain empty enough so that the lessons of life have a place to go.