—— 请按键盘 空白键 开始游戏 ——

科学没有捷径,只有脚踏实地。
There is no shortcut in science, only down-to-earth work.
我不是商人;我就是生意,伙计!
I’m not a perfect person, I never claimed to be one.
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.