记忆就像一只狗，它喜欢躺在哪里就躺在哪里。

The difference between ordinary and extraordinary is that little extra.

Words are wise men's counters, they do but reckon by them; but they are the money of fools.

为了生存，我们必须适应。为了繁荣，我们必须创新。

数学的进步不仅仅依靠个人的努力，而是通过几代人的集体工作。