写作是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。
The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
The past is never truly past until it has been fully understood.
To understand a life, one must first understand the age in which it was lived.
行业与环保人士之间的合作不仅是可能的，而且是必不可少的。
如果你不前进，你就在落后。