读未见书，如得良友；见已读书，如逢故人。
阅读未见过的书，如结识好朋友，情意和洽；重读已看过的书，如老朋友相晤，叙旧联谊。
The beauty of physics lies in its ability to reveal the profound simplicity underlying the apparent complexity of the universe.
In the darkness, two things are common to all men: fear and the desire for light.
Thoughts are the shadows of our feelings always darker， emptier， simpler.
书是一个小小的奇迹。