It is writ on Paradise's gate,
Woe to the dupe that yields to Fate! [ Hafiz ]

The head is always the dupe of the heart. [ La Rochefoucauld ]

The surest way of making a dupe is to let your victim suppose you are his. [ Bulwer-Lytton ]

Man is nothing but contradiction; the less he knows it the more dupe he is. [ Amiel ]

Wisdom consists in rising superior both to madness and to commonsense, and in lending one's self to the universal delusion without becoming its dupe. [ Amiel ]

If often happens too, both in courts and in cabinets, that there are two things going on together - a main plot and an underplot; and he that understands only one of them will, in all probability, be the dupe of both. A mistress may rule a monarch, but some obscure favorite may rule the mistress. [ Colton ]