Changing perceptions of women, the family and sexual relations cannot be separated from thinking about other matters. The two wars and the advent of states with new ambitions to mold the lives of their citizens meant that "public" affairs were more likely than ever before to intrude into private life. . . . Broadcasting, cinema and publishing created new sorts of public domains. It should also be remembered that the private world often showed a remarkable capacity to resist demands made on it. States that had unprecedented capacities to raise taxes, mobilize soldiers and even exterminate whole sections of their populations often found it impossible to raise the birth rate.