We live in a world in which people are censured, demoted, imprisoned, beheaded, simply because they have opened their mouths, flapped their lips, and vibrated some air. Yes, those vibrations can make us feel sad or stupid or alienated. Tough shit. That's the price of admission to the marketplace of ideas. Hateful, blasphemous, prejudiced, vulgar, rude, or ignorant remarks are the music of a free society, and the relentless patter of idiots is how we know we're in one. When all the words in our public conversation are fair, good, and true, it's time to make a run for the fence.

Daniel T. Gilbert (2007) in: John Brockman. What is your dangerous idea?: today's leading thinkers on the unthinkable. Harper Perennial, 2007, p. 43