—— 请按键盘 空白键 开始游戏 ——

"Children's books should be both a mirror and a window."
创新不是由逻辑思维带来的,尽管最后的产物有赖于一个符合逻辑的结构。
"A novel is a conversation between the writer and the reader, across time and space."
To do mathematics is to explore a universe of ideas, where the only limit is your imagination.