"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."

True leadership means making tough decisions today that will benefit future generations.

我们今天所做的每一个决定都为明天的森林播下种子。

技术不仅仅是一种工具，它可以让学习者拥有以前可能没有的声音。