Mathematics is not a spectator sport; to understand it, one must engage with it actively.
数学不是一项观赏性运动;要理解它,必须积极参与其中。
The wise person does not dogmatically assert anything, not even that the wise person knows nothing.
生活中最重要的是家庭。有些日子你爱他们,有些日子你不爱,但最终,他们是你会一直回家见到的人。