I will write later about math that is used as a tool in play, but now I am writing about math that is play — math done for no other purpose than the sheer fun and beauty of it.
以后我会谈到作为游戏工具使用的数学。但现在我要写游戏数学的事，纯粹为了乐趣和数学之美的数学。
In fact, those thousands of hours of forced work at math, done for a grade and not for fun or for any practical use, are what make math seem so difficult and intimidating.
事实上，那些在数学上的强迫的数千小时的学习，为的是成绩而不是乐趣，没有任何实际用途，正是这一点，使数学显得如此艰难和恐怖。
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