教育的艺术必须从教育的科学中衍生出其规则。
A writer is a person who is not satisfied with the world as it is, who wants to change it, to improve it, to make it more beautiful, more just, more livable.
The circular economy is not just an ideal; it's a necessity for our industry.
最好的发现是那些提出的问题比它们回答的还要多的发现。
The night is a great symphony, but the stars are its notes.