DOCTOR.—I have been thinking—
FOOL.—(Liar!)
D.—That you "come out" rather well for a fool.
Can it be that I have been entertaining an angel unawares?
F.—Dismiss the apprehension: I am as great a fool as yourself. But there is a way by which in future you may resolve a similar doubt.
D.—Explain.
F.—Speak to your guest of symptomatic diagnosis. If he is an angel, he will not resent it.