Why, acushla, nobody needs t' accuse th' poor; th' guilty need no accuser.
"My Lady of the Chimney Corner"
Alexander Irvine
I presume this is not the first time an opponent in argument has called his conqueror insane, or lost to reason, simply because his logic was too sound for him to grapple with, and the will of the accuser was too obstinate to yield, when conscientiously convinced.
"Marital Power Exemplified in Mrs. Packard's Trial, and Self-Defence from the Charge of Insanity"
Elizabeth Parsons Ware Packard
"A guilty conscience needs no accuser," she said.
"One Maid's Mischief"
George Manville Fenn