投资于低排放技术不仅对地球有益，也具有良好的商业意义。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

沉默有时比语言更有力量。

人的通病，往往是被局部所蒙蔽，而对全局的道理不明白。