Here are some words of wisdom from Mr. Franklin:
"Beware of the young doctor and the old barber."
"If you would persuade, you must appeal to interest rather than intellect."
"Remember not only to say the right thing in the right place, but far more difficult still, to leave unsaid the wrong thing at the tempting moment."
"Three may keep a secret, if two of them are dead."
There are many more Franklin quotes here.