—— 请按键盘 空白键 开始游戏 ——

The ladder of causation has three rungs: seeing, doing, and imagining.
"I hope my books can help children see the world in a different way, to notice the small details and the hidden meanings."
我宁愿做一个失败的作家,也不愿做一个成功的银行家。
在没有生命力的帮助下合成尿素是我们这个世纪最重要的发现之一。