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

仅仅知道如何使用工具是不够的；还必须了解它们何时适用。

读书不体验认识，就好像闪电照物，一点都抓不到；读书不能身体力行，就像水上行车、陆上行舟、一点用处都没有。

我认为理性是一种理想化的东西。