What is the theme in A Room of One's Own by Virginia Woolf?

Equal opportunity is the main theme of the book. Before the mid to late eighteenth century in the West, a person was born into a social class (either the aristocracy or the peasantry, with a few steps in between). It was taken for granted that the individual's class indicated his or her worth. That is, noble men and women were just that—more noble and somehow more fully human than their humbler counterparts. But during the age of democratic revolutions (The Enlightenment), it was asserted that all men are born equal and that social and economic differences between men are the result of differences in education and opportunity. Women immediately recognized the limitations of such theories and began to assert that just as the social system had been invalidated, so should be the gender class system in which women were considered inferior.