The document is called the letter to the Bishops of the Catholic Church on the Collaboration of Men and Women in the Church and in the World. In the document, Cardinal Ratzinger also attacks ideas that are not good for "the true progress of women".
One of these ideas, he says, is the belief that some people think women are less important than men.
This idea causes problems, he says, because it seems to mean that if women want to be equal they must become enemies of men. iseas like this could have a negative effect on the structure of the family,