—— 请按键盘 空白键 开始游戏 ——

In mathematics, as in life, the most profound discoveries often come from asking the simplest questions.
在数学中,就像在生活中一样,最深刻的发现往往来自于提出最简单的问题。
Ah, make the most of what we yet may spend, Before we too into the Dust descend; Dust into Dust, and under Dust to lie, Sans Wine, sans Song, sans Singer, and—sans End!