I do not know what the heart of a rascal may be, but I know what is in the heart of an honest man; it is horrible. - Joseph de Maistre
If a man defrauds you one time, he is a rascal; if he does it twice, you are a fool.
Make yourself an honest man, and then you may be sure that there is one rascal less in the world. - Thomas Carlyle
RASCAL, n. A fool considered under another aspect. - Ambrose Bierce