气候变化迫使每个林业工作者都成为了气候科学家，无论他们是否愿意。

成功不是成为最好的，而是比昨天更好。

一个从未犯错的人是因为他不曾尝试新鲜事物。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

一个人能成为什么，他就必须成为什么。这种需求我们称之为自我实现。