" But we must not (as we do every day) give the name of duty to an inward bitter harshness born of self-interested passion, nor that of courage to malicious and treacherous dealings. What they call zeal is their propensity to wickedness and violence: it is not the cause which sets them ablaze but self-interest: they stoke up war not because it is just but because it is war. "

― Michel de Montaigne , The Complete Essays