F.—You have won the wager.
FOOL.—I once read the report of an actual conversation upon a scientific subject between a fool and a physician.
DOCTOR.—Indeed! That sort of conversation commonly takes place between fools only.
F.—The reporter had chosen to confound orthography: he spelt fool "phool," and physician "fysician." What the fool said was, therefore, preceded by "PH;" the remarks of the physician were indicated by the letter "F."
D.—This must have been very confusing.
F.—It was. But no one discovered that any liberties had been taken with orthography.
D.—You tumour!