历史是由大大小小的时刻组成的。

The past is a shadow that follows us into the future.

书籍是最安静的叛逆形式。

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

居身平安之境要考虑危难之时，处身太平盛世要想到乱世之日。