—— 请按键盘 空白键 开始游戏 ——

To understand the universe, you must understand the language in which it is written, and that language is mathematics.
Confidence comes from preparation and knowing your stuff.
艺术是我们最接近魔法的东西。
一个值得追求的年度目标:充分学习一个领域,以至于你无法相信一年前有多么无知。
The quality of a country's institutions is the single most important determinant of its long-term economic performance.