book covers. Joel Rickett, deputy editor of The Bookseller, said: "The steps taken by Mr Pullman and other authors have taken the industry by surprise and I think these proposals are now in the balance." In 2014, Pullman supported the Let Books Be Books campaign to stop children's books being labelled as "for girls" or "for boys", saying: "I'm against anything, from age-ranging to pinking and blueing, whose effect is to shut the door in the face of children who might enjoy coming in. No publisher should announce on the cover of any book the sort of readers the book would prefer. Let the readers decide for themselves." Civil liberties Pullman has a strong commitment to traditional British civil liberties and is noted for his criticism of growing state authority and government encroachment into everyday life. In February 2009, he was the keynote speaker at the Convention on Modern Liberty in London and wrote an extended piece in The Times condemning the Labour government for its attacks on basic civil rights. Later, he and other authors threatened to stop visiting schools in protest at new laws requiring them to be vetted to work with youngsters—though officials claimed that the laws had been misinterpreted. Public jury In July 2011, Pullman was one of the lead campaigners signing a declaration that called for a 1,000-strong "public jury", selected at random, to draw up a "public interest first" test to ensure that power was taken away from "remote interest groups". The declaration was also signed by 56 academics, writers, trade unionists and politicians from the Labour Party, the Liberal Democrats and the Green Party. Library closures In October 2011, Pullman backed a campaign to stop 600 library closures in England, calling it a "war against stupidity". London Borough of Brent claimed that it was closing half of its libraries to fulfil its "exciting plans" to improve its library service. Pullman said: "All the time, you see, the council had been longing to improve the library service, and the only thing standing in the way was – the libraries." Speaking at a conference organised by The Library Campaign and Voices for the Library, he added: The book is second only to the wheel as the best piece of technology human beings have ever invented. A book symbolises the whole intellectual history of mankind; it's the greatest weapon ever devised in the war against stupidity.