—— 请按键盘 空白键 开始游戏 ——

我不是为观众画画,我是为我自己画画。
When a professor insists computer science is X but not Y, have compassion for his graduate students.
Writing is a way of preserving the truth of the past.
人需要困扰,困扰是心理健康的必需之物。
数学思想的美丽之处在于它可以跨越文化和时间被分享和理解。