"Censorship reflects a society's lack of confidence in itself. It is a hallmark of an authoritarian regime. Long ago those who wrote our First Amendment charted a different course. They believed a society can be truly strong only when it is truly free. In the realm of expression they put their faith, for better or for worse, in the enlightened choice of the people, free from the interference of a policeman's intrusive thumb or a judge's heavy hand. So it is that the Constitution protects coarse expression as well as refined, and vulgarity no less than elegance. A book worthless to me may convey something of value to my neighbor. In the free society to which our Constitution has committed us, it is for each to choose for himself."
US Supreme Court Justice Potter Stewart
In his dissenting opinion, Ginzburg v. United States
383 US 463 (1965)