from Proverbs Twenty-Nine
"A fool spendeth all his spirit but a wise man stilleth it within him."
One time last May I went to a meeting in Cambridge and stayed at a nice hotel for one night on the Harvard Campus. I turned on the television to catch some news and when I went to the bathroom, discovered that the television signal was being broadcast through the bathroom mirror as well. I had never seen this before and so stood, transfixed, as Glenn Beck raged on about something that I've since long forgotten.
But I always understood that moment to be a small prophecy, a kind of message from God: To look in the mirror and consider my own outbursts of anger, the least morally developed of my character traits.
A mirror speaks in Proverbs: "An angry man stirs up strife and a wrathful man abounds in transgression."
The mirror shows what the heart knows.