The things you do not have to say make you rich.
Saying the things you do not have to say weakens your talk.
Hearing the things you do not have to hear dulls your hearing.
And the things you know before you hear them; these are you and the reason you are in the world.
Source: John O'Donahue repeated the following in a tape I have by him when I attended a conference on Pricing Wisdom a few years ago. He states that William Stafford said this in the book "Crossing Unmarked Snow" [or territory]
Contributed by: Val