Wisdom doesn't necessarily come with age. Sometimes age just shows up all by itself.
Tom Wilson
If you thing twice before speaking once, you will speak twice the better for it.
William Penn
Bad habits are like a comfortable bed, easy to get into, but hard to get out of.
Anonymous
Words of wisdom should be ways of wisdom.
Arrested Development
Holding on to anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned.
Buddha
Listen to all, plycking a feather from every passing goose, but follow no one absolutely.
Chinese proverb
Wisdom has two parts: 1) Having a lot to say. 2) Not saying it.
Church billboard in Vermont