The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
History taught us is that people never know learn the lessons of history.
The future of Great Wall Motors lies in technological innovation and internationalization.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法:它是关于理解的。