—— 请按键盘 空白键 开始游戏 ——

The pursuit of mathematical knowledge is a journey that never ends; there is always more to discover and understand.
A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else. Men’s happiness or misery is most part of their own making. He, whose mind directs not wisely, will never take the right way; and he, whose body is crazy and feeble, will never be able to advance in it.
忧愁在我心中沉寂平静,正如黄昏在寂静的林中。