What are Mill’s four main arguments in defence of freedom of speech?

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What are Mill’s four main arguments in defence of freedom of speech?

Which, in your opinion, is the weakest argument? Explain what objections might be raised to this argument, and consider what responses (if any) might be raised to these objections on behalf of Mill.

In defending freedom of speech and ideas from suppression and censorship, subject to the Harm Principle, Mill laid down four arguments to show that such suppression was contrary to the good of ‘the human race, posterity as well as the existing generation’, both to those who are suppressed and more acutely the suppresser. The arguments are as follows; firstly the idea might be true. To assume otherwise is to assume infallibility. Secondly, though the idea might be wrong, it may contain some truth missing from the orthodox view and thus by being openly discussed and refuted the true element may be isolated and incorporated into the larger truth. Thirdly, even if the established truth is the whole truth, it must be criticised and challenged or it will become a received opinion, held without rational argument. Finally, Mill argues, if orthodox opinion goes unchallenged it stands in danger of losing its power and becoming something professed, but not deeply believed. These arguments will be explained in more detail in turn.

If one assumes that one’s opinion is wholly true, complete and accurate one assumes infallibility, there being no conceivable possibility of being wrong or incomplete in any aspect of it. If this were the situation there might be a basis for the suppression of alternative views but, as human beings, this is manifestly not the case. Mill held that one could not hold a view with certainty until it had been rigorously and openly challenged and even then must be continuously open to such scrutiny for it to approach absolute certainty. If one looks to the example of Newtonian physics one can see that these were held with certainty for hundreds of years, but were not held to be complete and infallible and so when Einstein presented his new concepts to the scientific community they were critically examined and the sum of human knowledge increased. To have suppressed these would have prevented many of the technological advances made in the late 20th century from space travel to this PC.

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The second of Mill’s arguments regards the possibility that opinions, whilst being false, may contain an element of truth and as such their suppression would lead to that truth being lost to human development. Mill produces the example of Jean-Jacques Rousseau’s ‘noble savage’. Rousseau wrote on the nobility of a simple life out with society and the corrupting influence of ‘civilisation’. This ran entirely contrary to the belief of the vast majority of that civilised society which held that there was little similarity between the ‘ancients’ and themselves, and that all differences between them was to the benefit of the ...

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