经济学的研究最终是对人类行为及其后果的研究。
The study of economics is ultimately the study of human behavior and its consequences.
战场交锋,即使列阵有方,但以勇猛为本;操办丧事,即使礼节周全,但以哀痛为本;文人学士,即使学富五车,但以德行为本