The problem with common sense is, it isn't.
Neither a Fortress nor a Maidenhead will hold out long after they begin to parley.
Learn of the skillful; he that teaches himself, has a fool for his master.
A lie stands on one leg, truth on two.
God heals, and the doctor takes the fees.
An Episcopalian divine once told the Pope that the only difference between their denominations was that "the Church of Rome is infallible and the Church of England is never in the wrong."