"Those who say do not know and those who know do not say."
This tidbit was shared with me by my new friend who was helping me trying to convince myself that being responsible was a good thing. (In this case being responsible was not shucking everything on my to-do list just to spend an hour or two with him.)
It was apparently written by Lao Tzu in the Tao Te Ching. I have not idea if that's spelled correctly or even what that is, but boy did it speak to me.