经济发展理论研究的是经济系统如何产生不断改变它的力量。
The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
一个毫无幽默感的小孩要走过漫漫人生，真悲哀。
过去是一个异国；他们在那里做的事情不同。
Myth is a type of speech chosen by history: it cannot possibly evolve from the 'nature' of things.
正是梦想实现的可能性让生活变得有趣……
成功的真正标准是你帮助他人取得成功的程度。