正该来时，先生（老子）应时来到这世间；正该去时，先生顺时离开这世间。安于时势，顺应自然规律，哀乐就不能进入心中。
The real test of an algorithm is not just its correctness, but its scalability and robustness.
当可怕的事情发生时，人们会觉醒。
We are being drowned in a sea of irrelevance.