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Revenge is a debt, in the paying of which the greatest knave is honest and sincere, and, so far as he is able, punctual.

Charles Caleb Colton (1824). “Lacon, Or, Many Things in a Few Words: Addressed to Those who Think”, p.124
Revenge is a debt, in the paying of which the greatest knave is honest and sincere, and, so far as he is able, punctual.