He said that the world was made for men to fight in and that the worth of a thing was the worth of the fight for it.

人的本性是不断生长的生理，每天都在生成变化。

我对解决已经解决的问题不感兴趣。

要真正理解宇宙，我们必须首先理解构成它的最小粒子。

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。