A mental stain can neither be blotted out by the passage of time nor washed away by any waters.
Marcus Tullius CiceroWhen trying a case [the famous judge] L. Cassius never failed to inquire "Who gained by it?" Man's character is such that no one undertakes crimes without hope of gain.
Marcus Tullius CiceroThe evil implanted in man by nature spreads so imperceptibly, when the habit of wrong-doing is unchecked, that he himself can set no limit to his shamelessness.
Marcus Tullius Cicero