—— 请按键盘 空白键 开始游戏 ——

学习数学的唯一方法就是做数学。
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
The mind is a system of interrelated processes.
I believe in the power of storytelling to connect people across different cultures and experiences.
The existence of a legal system is a matter of fact, not of morality.