—— 请按键盘 空白键 开始游戏 ——

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
我从未认识过任何人是他们看起来的样子;或者至少,只是他们看起来的样子。
Innovation starts with asking, ‘What if?’