Words have the power to heal, but they can also wound deeply.

If we don't change direction, we'll end up where we're headed.

种一棵树最好的时间是20年前，其次是现在。

We have a responsibility to future generations to leave the planet in better shape than we found it.

生活中最重要的不是征服，而是要战斗得好。

自由的概念与真理的概念不可分割。