Sojourner Truth delivered her Ain`t I a Woman? speech in 1851 at the Women's Rights Convention in Akron, Ohio. Her short, simple speech was a powerful rebuke to many antifeminist arguments of the day. It became, and continues to serve, as a classic expression of women`s rights. Truth became, and still is today, a symbol of strong women.
This quote can be found only in the movie.
It can be heard in the third movie, and is told by the headmaster.
I just checked the book, and it doesn't appear there.
Hope this helped I. could not write on this so here
I would say a book. But I’m not sure. Sorry this isn’t much help!