It's no use talking about the negative relationship between a red light and a green light and a yellow, white, or blue one because they all have the same value.

讲什么它是红灯，不是绿灯,不是黄灯白灯一点关系都没有,它们所代表的意义都一样。

耶鲁公开课 - 文学理论导论课程节选

Let's make the red light the symbol of 'go.'" And now with the ecological movement it would be very difficult to make the green light the symbol of "stop," and in any case all sorts of complications would arise. Right?

我们来假设，红灯的意思是出发“,那么难道,绿灯的意思是停止吗？,这样会引起各种不必要的麻烦？

耶鲁公开课 - 文学理论导论课程节选