Petulant. If he says black's black,—if I have a humour to say it is blue—let that pass. All's one's for that. If I have a humour to prove it, it must be granted.
Witwould. Not positively must,—But it may, it may.
Petulant. Yes, it positively must,—upon proof positive.
Witwould. Ay, upon proof positive it must; but upon proof presumptive it only may. That's a logical distinction now.
CONGREVE.