Freedom of speech

• We can never be sure that the opinion we are endeavoring to stifle is a false opinion; and if we were sure, stifling it would be an evil still. ~John Stuart Mill, On Liberty, 1859

• The fact is that censorship always defeats its own purpose, for it creates, in the end, the kind of society that is incapable of exercising real discretion. ~Henry Steele Commager

• The only valid censorship of ideas is the right of people not to listen. ~Tommy Smothers