高分子科学的进步依赖于理论与实验的结合。

如果你想看看这个国家的本质，你必须乘坐铁路。当你快速穿过时，看看外面，你会发现美国的真实面貌。

对往日良辰只付之一叹，借纷繁景象把心事排除。

Theoretically there is a perfect possibility of happiness: believing in the indestructible element within oneself, and not striving towards it.

The difference between good and great is the extra effort.

想要懂得今天，就必须研究昨天。