时间是一条既向前流又向后流的河流。
Time is a river that flows backward as much as it flows forward.
宇宙是一个不断变化和演变的地方，我们只是其中的一小部分。
Education is one of the most powerful tools we have for reducing inequality and promoting social mobility.
The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
天才不过是长久的耐心。
我们不是从祖先那里继承了海洋，而是从子孙那里借用了它们。
最伟大的礼物是对阅读的热情。