We are all obsessed with the idea of the frontier, but it's a frontier that keeps receding.
We have a responsibility to future generations to leave the planet in better shape than we found it.
我们有责任为子孙后代留下一个比我们发现时更好的地球。
因此，人们联合成立共和国、置身于政府之下的伟大和主要目的是保护他们的财产。
Life is measured by thought and action，not by time.
The greatest glory is not in never falling, but in rising every time we fall.
森林不需要我们，但我们需要森林——这一真理应指导我们在林业中的每一个决策。