On Liberty · ¶66

Let us now pass to the second division of the argument, and dismissing the supposition that any of the received opinions may be false, let us assume them to be true, and examine into the worth of the manner in which they are likely to be held, when their truth is not freely and openly canvassed. However unwillingly a person who has a strong opinion may admit the possibility that his opinion may be false, he ought to be moved by the consideration that however true it may be, if it is not fully, frequently, and fearlessly discussed, it will be held as a dead dogma, not a living truth.

John Stuart Mill · Walter Scott Publishing edition, with W. L. Courtney’s introduction · Gutenberg #34901
John Stuart Mill · Walter Scott Publishing edition, with W. L. Courtney’s introduction · Gutenberg #34901
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