20多岁时,人格的变化比人生中任何其他时期都要大。
Collaboration across sectors is the only way to solve forestry's greatest challenges.
阅读的快乐在于发现你并不孤单。
The past is never dead. It's not even past.
数学家的工作永远不会真正完成;总有更多的东西需要探索。