—— 请按键盘 空白键 开始游戏 ——

She realized that sometimes, the hardest thing to do is to let go.
To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.
The stock market is filled with individuals who know the price of everything, but the value of nothing.
The elegance of a mathematical proof is akin to the beauty of a well-crafted algorithm.
I think of other ages that floated upon the stream of life and love and death and are forgotten,and I feel the freedom of passing away.
数学不是关于数字、方程、计算或算法的:它是关于理解的。