没有人民的普遍知识，自由就无法得到保护。
Liberty cannot be preserved without a general knowledge among the people.
科学中最重要的工具不是显微镜，而是思维。
一本好书是一扇通往更广阔世界的魔法之门，那里充满奇迹、欢乐和意义。
煤炭行业的转型必须依靠科技引领，绿色发展是必由之路。
The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.