一本好的图画书就像一部无声电影;它不用文字就能讲述一个故事。
Time travel is the most frustrating thing in the world. You can't change anything, and you can't stop anything from happening.
Mastery is not a function of genius or talent. It is a function of time and intense focus applied to a particular field of knowledge.
The only way to change the world is to change the way we think.