The opposition is indispensable. A good statesman, like any other sensible human being, always learns more from his opponents than from his fervent supporters.
反对的声音是不可或缺的。一个好的政治家，如同其他通晓事理的人一样，总是从他的反对者而非热心支持者那里学到更多东西。

——Walter Lippmann. Atlantic Monthly
——沃尔特·李普曼