—— 请按键盘 空白键 开始游戏 ——

A proof is a device for convincing someone else that a mathematical statement is true.
表演不是要成为不同的人。它是在明显不同的事物中找到相似之处,然后在那里找到自己。
The best way to be happy is to be grateful.
The fragility of banks is a direct consequence of their role as liquidity providers.