“The chief danger to freedom of thought and speech at this moment is not the direct interference of … any official body. If publishers and editors exert themselves to keep certain topics out of print, it is not because they are frightened of prosecution but because they are frightened of public opinion. In this country intellectual cowardice is the worst enemy a writer or journalist has to face. … The sinister fact about literary censorship in England is that it is largely voluntary.”

— George Orwell (via Brain Pickings)