"IT is not by any means self-evident upon the face of it that an institution like the liberty of speech is right or just. It is not natural or obvious to let a man utter follies and abominations which you believe to be bad for mankind any more than it is natural or obvious to let a man dig up a part of the public road, or infect half a town with typhoid fever. The theory of free speech, that truth is so much larger and stranger and more many-sided than we know of, that it is very much better at all costs to hear every one's account of it, is a theory which has been justified upon the whole by experiment, but which remains a very daring and even a very surprising theory. It is really one of the great discoveries of the modern time but once admitted, it is a principle that does not merely affect politics, but philosophy, ethics, and finally, poetry."
~G.K. Chesterton: Robert Browning.