He called it The Black Swan because if you look at swans, they're always white.

他称之为黑天鹅现象,因为我们看到的天鹅总是白色的

耶鲁公开课 - 金融市场课程节选

So what I want to do today is look closely first at the selections from Black Boy that I asked you to read and to look at those as a text and to ask ourselves what kind of story it is.

它们细微的差别,我先读部分《黑孩子》,先前我布置给大家去阅读,并思考几个问题,我发现了什么,故事是什么类型。

耶鲁公开课 - 1945年后的美国小说课程节选