" That person then, whoever it may be,” Cicero wrote in Tusculan Disputations, “whose mind is quiet through consistency and self-control, who finds contentment in himself, who neither breaks down in adversity nor crumbles in fright, nor burns with any thirsty need nor dissolves into wild and futile excitement, that person is the wise one we are seeking, and that person is happy. "

― David Brooks , The Road to Character