“If we look at the broad sweep of history, we find some interesting patterns regarding the size of women’s rooms. When political and social structures are less centralized and less clearly defined, women often experience greater agency; their rooms are bigger. It is no accident that the stories of the most authoritative women in Christian history stem from the fourth century through the tenth century, when the authority structures of Christianity—not to mention the political structures to which Christianity became attached—were more fluid. It is also no accident that, after the ecclesiastical hierarchy became more centralized and more powerful during the central Middle Ages, women’s ability to exercise formal authority diminished; women’s rooms became smaller. There are always exceptions, of course, but these general patterns are clear.”