What about those other historical sexual revolutions? The most famous began in the 1960's and continued through the 1980's. Before that, most historian point to the aftermath of World War I and the 1920's as a time when attitudes towards sex, particularly how women presented their own sexuality, changed dramatically. Going further back into history, the philosophy of the Enlightenment criticized traditional religious authorities and challenged humans to reexamine their ideas about morality, including (but not necessarily preoccupied with) sex. However, while publicly stated attitudes towards sex and sexuality may have veered towards repression and religious authority, a longer view of history suggests that sexual revolutions may actually be the rule, not the exception. Greek and Roman sexual practices were famously open, especially towards sexual preference. Even the Medieval period may have been more freewheeling than we imagine, as any reader of Chaucer or Boccaccio would point out.