"Not all those who wander are lost."
所有的悲剧以死亡结束，所有的喜剧以结婚告终。
Happiness in this world, when it comes, comes incidentally. Make it the objet of pursuit, and it leads us a wild-goose chase, and is never attained. Follow some other object, and very possibly we may find that we have cought happiness without dreaming of it.
关于课程的斗争最终是关于我们希望拥有何种社会的斗争。
The beauty of mathematics only shows itself to more patient followers.