It is sadder to find the past again and find it inadequate to the present than it is to have it elude you and remain forever a harmonious conception of memory.

The most dangerous thought you can have as a creative person is to think you know what you're doing.

可持续发展不仅仅是一个流行词，它是负责任的林业的基础。

Mathematics is a living, breathing discipline, constantly evolving with new ideas.

化学最令人兴奋的地方在于能够创造出从未存在过的新分子。