The only limit to our realization of tomorrow is our doubts of today.

The biographer's challenge is to be both a detective and a poet.

译文：了解人情世故就是一门学问，能应付人情世故就是好文章。赏析：我们要学会洞悉人性，洞察人心，要善于向书本学习，向社会学习，悟透人情世故，处事圆滑，才能走得更远。

Success is not about how much you achieve, but how much you inspire others to achieve.

森林不仅仅是碳汇，它们是生命之源。