一个好的数学家是能看到定理之间类比的人;一个伟大的数学家是能看到类比之间的类比的人。
A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.
可持续性不再是可选项,而是商业的必然要求。
The past is always present, and the present is always past.