最终，我们会记住的不是我们的敌人的话语，而是我们朋友的沉默。
In the end， we will remember not the words of our enemies， but the silence of our friends.
The most perfect education, in my opinion, is such an exercise of the understanding as is best calculated to strengthen the body and form the heart.
乐观不仅仅是一种特质；它是一种可以培养的技能。
世界不是一个需要解决的问题；它是一个我们所属的生命体。