—— 请按键盘 空白键 开始游戏 ——

古代著书立说的人,都有卓越的见解而自成一家,后世无法轻易改变。
The goal of economics is to understand how to allocate scarce resources in the most efficient way possible.
The challenge is to make the invisible visible.
I don’t think you should ever feel like you’ve achieved everything.
if you are walking in the hell, keep walking!
最好的数学是简单的,但又不至于过于简单。