The meaning of a word is not a mental entity， but a social practice.
一个词的意义不是心智实体，而是社会实践。
经济周期不仅仅是围绕某个平滑趋势的波动，而是经济受到根本性冲击的结果。
To do mathematics is to explore a universe of ideas, where the only limit is your imagination.
未来是自己开拓的。
The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.
The price of doing the same old thing is far higher than the price of change.
Music has made me understand how important it is to persist in dreams.