乐观是一种可以学习的技能。
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。
Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.