Grief is not linear. It doesn't follow a neat trajectory from denial to acceptance.
悲伤不是线性的。它不会整齐地从否认走向接受。
Health is not a privilege of the rich, but a vulnerability of the poor.
质量和道德永远不应该为短期利益而妥协。
This is the best time ever to make something. None of the greatest， coolest creations 20 years from now have been invented yet. You are not late.
The P versus NP problem is one of the most important unsolved problems in computer science.
Every word is a choice, and every choice changes the world.