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。

乳制品生产的创新必须在效率和环境责任之间取得平衡。

To love is to risk not being loved in return. To hope is to risk pain. To try is to risk failure, but risk must be taken because the greatest hazard in life is to risk nothing.

简单并非易事

The string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.

光不仅是照明，更是情感的语言

我不是叛逆者，我只是一个拒绝随波逐流的人。