The Knave Qualified (in his many incarnations) must have the Dupe about him or perish. Thus the Knave who would save his soul by self-deception feeds, cannibal-like, upon the straightforwardness of the Dupe, and says to himself: "How can I be such a Knave after all, since these good Dupes here heartily agree with me?"
The Knave Cowardly props himself upon that sort of courage in the Dupe which always accompanies virtue. "I run a risk," says he, "in proposing the State purchase of this or that at such and such a price. My friend the Old Knave went under thus in 1895; but the Good Dupe is a buckler in the fight; he will dare all because his heart is pure."
The Knave Slovenly looks to the Dupe to see to details and to meet men in ante-chambers, and to have kind, honest eyes in bargaining. This sort of Knave will have two or even three Dupes for private secretaries, and often one for a brother-in-law.
The Dupe is in God's providence very numerous, for his normal rate of breeding is high in the extreme, his normal death-rate low. On this account those curious in this part of natural history may watch the Dupes going about in great herds, conducted and instructed by the Knave; nor is the one to be distinguished from the other by the coat, but rather by the snout and visage, the eyes and, if one be old enough to open the mouth, by the teeth. The Dupe, upon the other hand, will not be of great service in any physical struggle and must not be depended upon for this. It is his delight to browse and when disturbed he scatters rather than flies. Here and there a Rogue Dupe will turn upon his pursuers, in which case he is invariably devoured.
The Dupe has his habitat, but that not easily defined, as in the suburbs of great cities, and in those towns called residential, where the leisured and the inane make their lives seem so much longer than those of others. But there are exceptions also to this, and the Dupe will sometimes migrate in vast numbers from one spot to another in such few years as wholly to discomfit the calculations of the Knaves. Some of these have been found to stand up in public halls before numbers whom they had thought to be Dupes (seeing that the locality was Little Partington) but only to discover a great boiling of Anti-Dupes, men working with their hands or what-not, quite undeceivable, as often as not Atheist, and ready to storm the platform and tear the Knave alive.