现实并不总是可能或可信的。
在一个国家中,一个公民的自由是对其他人的威胁。
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。
"Every ending is but a disguised beginning waiting to be recognized."