Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.

数学中最重要的是提出正确的问题。

写作是对抗遗忘的一种形式。

如果你懂得了孩子的语言，他们会与你更拉近。因为你这里有他需要的帮助，他会对你产生异样的亲切感。