The best way to learn mathematics is to do mathematics.
学习数学的最好方法就是做数学。
To write is to resist, to fight against the injustices of the world with the power of words.
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends， and the other begins？
El tiempo es el único juez verdadero de la literatura.
Investing in technology today ensures efficiency tomorrow.
States are rational actors, and they will always act in their own self-interest.