恐惧是人类如此强大的情感，以至于当我们允许它控制我们时，它会驱赶我们心中的同情。
Fear is such a powerful emotion for humans that when we allow it to take us over， it drives compassion right out of our hearts.
If you have an apple and I have an apple, and we exchange apples, we both still only have one apple. But if you have an idea and I have an idea, and we exchange ideas, we each now have two ideas.
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
教育是对人力资本的投资，会以更高生产率的形式获得回报。
每当新的一天开始，恐惧都有机会茁壮成长，信念也一样有机会开花结果。你们将面临屈服于恐惧或建立信念的抉择。
可持续性不仅仅是一种趋势，更是我们共同的责任。
恐惧是一种习惯。我不害怕。
世界不是一个愿望实现的工厂。