The AAUP was formed in 1915 by Arthur Lovejoy and John Dewey, in response to an incident at Stanford University several years earlier. Almost a century later, the AAUP is still addressing the kinds of abuse that spurred Lovejoy and Dewey to organize the Association. Academia has changed a lot since 1915, but there are still people who want to control what professors teach and write. Thanks to the AAUP, academic freedom is recognized as the fundamental principle of our profession. Despite this acceptance, academic freedom remains vulnerable. The attacks are more subtle in some cases, but the response must always be decisive.