The true measure of success in forestry is leaving the land healthier than we found it.

Short-term gains should never come at the expense of long-term sustainability.

The deterioration of a government begins almost always by the decay of its principles.

引用自海明威《老人与海》，张海迪在演讲中多次引用以表达坚韧精神

诗歌可以激发情感，可以观察社会，可以交流思想，可以抒发怨愤。

Anything truly novel is invented only during one’s youth， later one becomes more experienced more famous， and more blockheaded.

I couldn't remember the reason for living, and when I did it wasn't convincing.