“Many are really virtuous who cannot explain what virtue is . . . But the powers themselves in reality perform their several operations with sufficient constancy and uniformity in persons of good health whatever their opinions be about them . . .” PersonsRealityOpinionVirtueEthicsOperationsSufficientVirtuousGood HealthConstancyUniformity Book:An Essay on the Nature and Conduct of the Passions and Affections Source: An Essay on the Nature and Conduct of the Passions and Affections