What are the themes in Margaret Fuller's Woman in the Nineteenth Century?

Fuller touches on many topics in her book so much so that
many (white male) critics defined Woman in the Nineteenth Century a
"glorious confusion". Yet, the theme which she develops more fully is certainly women's
position of inferiority when compared to men in the nineteenth century. Men refuse to
acknowledge women's spirituality and thus hinder their intellectual growth. Because of
this attitude, women cannot fully realize their God-given potential. Fuller's argument
also linked the battle for women's rights to abolitionism, stating that those who
thought that slavery was wrong could certainly not approve of the submission of women.
The liberation of women should be considered a right, not as a mere concession. This
idea influenced the movement for women's suffrage.

Although
Fuller clearly identifies the conflict between men and women in the nineteenth century,
she introduces a touch of skepticism against the binary opposition when she says that
"there is no wholly masculine man, no purely feminine woman."