The power of abstraction is that it allows us to ignore irrelevant details and focus on the essential aspects of a problem.
抽象的力量在于它允许我们忽略不相关的细节，专注于问题的本质方面。
The world is a very complicated place, and it's not always easy to understand what's happening around us.
The truth is rarely pure and never simple.
To say something is to perform an action， and to perform an action is to do something with words.
每个故事都有千种真相。
The truth is, we are all waiting for someone to take care of us. We are all waiting for someone to tell us what to do.
History does not repeat itself, but it recurs in different forms.
