你们必须掌握许多知识，让它们在你们的头脑里形成一个思维框架，在随后的日子里能自动地运用它们。

译文：凡是说祸福，是靠自己求来的，就是圣贤之言。若是说祸福，是靠上天决定的，就是庸俗之言。

心理学是精神生活的科学，而不仅仅是其元素的分类。

We must embrace change and challenge ourselves to think differently.

"He who has a why to live can bear almost any how."

It is now clear that the hybrids form seeds which have the one or the other of the two differentiating characters.

If you keep learning all the time you have a huge advantage.