Robert Heinlein was a major American science fiction writer (see: http://en.wikipedia.org/wiki/Robert_A._Heinlein ).
Robert A. Heinlein on censorship in “If This Goes On”: “Secrecy is the keystone of all tyranny. Not force, but secrecy… censorship. When any government , or any church for that matter, undertakes to say to its subjects, “This you may not see, this you are forbidden to know,” the end result is tyranny and oppression, no matter how holy the motives.” [1].
[1]. Robert A. Heinlein, quoted by Fijileaks: http://www.fijileaks.com/home/october-15th-2014 .