The most sustainable forest is one that provides value to people while maintaining its ecological integrity.

生活的目的不是快乐。它是有用的，是光荣的，是富有同情心的，是让你活得有意义，活得好。

The truth is, we are all capable of terrible things. But we are also capable of great kindness.

镜子经过淬炼会越来越明亮，钢铁经过锤炼会越来越坚硬。

发出履行性陈述并不是在做陈述，因此履行性陈述的发言既不真实也不虚假。