Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
成功绝非偶然。它是努力工作、坚持不懈、学习、研究、牺牲,最重要的是对你正在做或正在学习做的事情的热爱。
成功是一段旅程,而不是终点。不断学习,不断成长。
In the darkness, even a small light can guide you home.