Green writes, "A librarian should be as unwilling to allow an inquirer to leave the library with his question unanswered as a shopkeeper is to have his customer go out of his store without making a purchase." He also encouraged objectivity in addressing patrons' queries, instructing librarians to "avoid religiously the practice of cramming the minds of young inquirers with one-sided views regarding questions in dispute." While librarians should do everything they can to assist their patrons, Green also warned against making these patrons too dependent. Librarians should function, in part, as teachers, helping people gain the skills needed to locate information for themselves.