It is virtue, virtue, which both creates and preserves friendship. On it depends harmony of interest, permanence, fidelity.
Marcus Tullius CiceroHatreds not vowed and concealed are to be feared more than those openly declared.
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 CiceroThe wise are instructed by reason, average minds by experience, the stupid by necessity and the brute by instinct.
Marcus Tullius Cicero