"When, in the past, authorities called upon the library profession to serve national security interests in these ways, individual librarians and the profession as a whole have experienced an evolving tension between their roles as guardians of public well–being and as protectors of intellectual freedom. This is a fundamental issue, one that reflects upon the profession’s view of itself and of its place in American life. Librarians once again face this challenge. An inquiry into the similarities and differences with the past may aid in suggesting a response that is both professionally sound and individually appropriate". For more, see Joan Starr: "Libraries and national security: An historical review", First Monday 9 (2004) 12