Here's a speech she gave at Swathmore College in 1992 when she received an honorary degree. In the middle of it, by the way, she bemoans an overemphasis on what these days we would call multiculturalism. A snippet:
...We are now forced to deal with the complex task of getting a stable relationship between Unity and Diversity. We cannot over-indulge diversity to the point that it becomes a weed that chokes out unity; but neither should we provide such strict conditions for unity that we lose the advantages of diversity.
We had a policy--"United we stand; divided we fall"--and we combined this with the idea of a melting pot for citizenship to achieve one national indivisible. Lately, however, instead of emphasizing ways in which we can be alike, we yell loudly about our differences. We concentrate on past origins as if we are permanently tethered, clinging as hyphenated European-Americans, Asian-Americans, Afro-Americans--Why can't we all be just Americans?
The task of ensuring a healthy environment for our society, and protecting it against psychological pollution, is not beyond our powers...
Ooh, well said. I'd like to second that, please.