Pain is the absence of pleasure, pleasure is the absence of pain.

The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

质量是工程的生命线，任何时候都不能放松对质量的追求。

每个孩子都值得在故事中看到自己。

音乐是我的生命，谢谢你们肯定我的生命。