I was watching Fred Harteis as he was talking the other day.  I noticed that Fred really thinks through everything that he says before he says it.  That is a quality of a wise man.  Proverbs 10:13 says, "Wisdom is found on the lips of the discerning, but a rod is for the back of him who lacks judgement."  Another good proverb is Proverbs 11:12 - "A man who lacks judgement derides his neighbor, but a man of understanding holds his tongue."