—— 请按键盘 空白键 开始游戏 ——

Good econometrics is like good carpentry—it's all about using the right tool for the job.
好的计量经济学就像好的木工——关键在于为工作使用正确的工具。
领导的艺术在于说不,而不是说是。说是很容易的。
As to the gods, I have no means of knowing either that they exist or that they do not exist. For many are the obstacles that impede knowledge, both the obscurity of the question and the shortness of human life.