It is very curious that the United States and Canada both assume that diversity means only race and ethnicity. They never assume it might mean more Nazis, or more Southern Baptists. That's diversity too, you know.

Learning can cause social fracture. Your people start expressing themselves.

My decision was sparked by affirmative action. There was a point in my life when affirmative action would have meant something to me - when my family was working-class, and we were struggling.

Mexicans who come to America today end up opposing assimilation. They say they are "holding on to their culture." To them, I say, "If you really wanted to hold on to your culture, you would be in favor of assimilation. You would be fearless about swallowing English and about becoming Americanized. You would be much more positive about the future, and much less afraid. That's what it means to be Mexican.

I don't think writers should be convenient examples. I don't think we should make people feel settled. I don't try to be a gadfly, but I do think that real ideas are troublesome. There should be something about my work that leaves the reader unsettled. I intend that.

But lots of emerging racial tensions in California have nothing to do with whites: Filipinos and Samoans are fighting it out in San Francisco high schools. Merced is becoming majority Mexican and Cambodian. They may be fighting in gangs right now, but I bet they are also learning each other's language.

I came from a white middle class neighborhood. Was I expected to go back there and teach the woman next door about Renaissance sonnets? The embarrassing truth of the matter was that I was being chosen because Yale University had some peculiar idea about what my skin color or ethnicity signified.