Haunted Man Ghost's Bargain

Far be it from me to assert that what everybody says must be true. Everybody is, often, as likely to be wrong as right. In the general experience, everybody has been wrong so often, and it has taken, in most instances, such a weary while to find out how wrong, that the authority is proved to be fallible. Everybody may sometimes be right; but THAT'S no rule, as the ghost of Giles Scroggins says in the ballad