Your most unhappy customers are your greatest source of learning.
你最不满意的客户是你最好的学习来源。
Neither the life of an individual nor the history of a society can be understood without understanding both.
政治理论的研究不应局限于西方；我们需要探索非西方传统中丰富的政治思想。
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.
你最不满意的客户是你最大的学习来源。
The most important property of a program is whether it accomplishes the intention of its user.