最可持续的采伐是让森林比我们发现时更健康。
The most sustainable harvest is one that leaves the forest healthier than we found it.
The most dangerous phrase in the language is, 'We've always done it this way.'
I'm the reason your water won't flow.
If you want to go fast, go alone. If you want to go far, go together.
我不需要理由去坚强。
A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.
一切迄今为止社会的历史都是阶级斗争的历史。