—— 请按键盘 空白键 开始游戏 ——

The structure of DNA was a puzzle that demanded to be solved.
If we don't believe in freedom of expression for people we despise, we don't believe in it at all.
只有当人认识到自己对别人的依赖时,他才是真正自由的。
"Children's books should be both a mirror and a window."
The best fertilizer is the gardener's shadow.