A "quack" he may be, but like the spiritualistic quack, he invokes the belief in the Supernatural, and perhaps shares it.
"A Handbook to the Works of Browning (6th ed.)"
Mrs. Sutherland Orr
There are still school tyrants who talk with philosophic air of flogging children to make them happier, and others who say with hard tones and clenched hands that "the one thing they will not allow in their schools is a sulky boy or girl," and they mean, when they say so, that if a boy is sulky they take no steps to find out the cause of his disease or the natural remedy for it, but they apply the universal remedy of the old-fashioned quack trainer and whip the poor boy, who is already suffering from some physical or nervous derangement.
"Dickens As an Educator"
James L. (James Laughlin) Hughes
Then from the farmyard a good two hundred yards distant, would rise the reply, quack!
"My Home In The Field of Honor"
Frances Wilson Huard