The moment you stop to think about whether you love someone, you've already stopped loving that person forever.

The roads are full of crowds going somewhere, but nobody knows where they are going.

南怀瑾：诸法的本来面目就是空相，诸法的实相亦是空相，诸法未曾离开空相，故云是诸法空相……一切法的实相是空，是故一切法从本以来，不生不灭，不垢不净，不增不减。

谎言可以绕地球半圈，而真相才刚刚穿上鞋子。

Time has no divisions to mark its passage, there is never a thunderstorm or blare of trumpets to announce the beginning of a new month or year.

反馈是鲁棒控制系统的关键。

不要仅仅成为事实的记录者，而要试图深入探索它们起源的奥秘。

哲学的任务不是提供答案，而是澄清问题。