—— 请按键盘 空白键 开始游戏 ——

True courage is not the absence of fear, but moving forward in the face of fear.
I don’t need a reason to be great.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
教育的首要目标是培养能够做新事情的人,而不仅仅是重复前几代人所做的事情。