The justification and the purpose of freedom of speech is not to indulge those who want to speak their minds. It is to prevent error and discover truth. There may be other ways of detecting error and discovering truth than that of free discussion, but so far we have not found them.
Interpretation
Freedom of speech is essential for uncovering truth and avoiding mistakes.
This quote emphasizes the importance of freedom of speech not merely as a right to express opinions, but as a crucial mechanism for identifying errors and discovering the truth. The speaker argues that while there may be alternative methods for these goals, none have proven to be as effective as open discussion, thus highlighting the foundational role that free dialogue plays in society.
In practice
In a debate about censorship, one could use this quote to advocate for the importance of free expression.
It is sobering to recall that though the Japanese relocation program, carried through at such incalculable cost in misery and tragedy, was justified on the ground that the Japanese were potentially disloyal, the record does not disclose a single case of Japanese disloyalty or sabotage during the whole war.
If our democracy is to flourish, it must have criticism; if our government is to function it must have dissent.
The greatest danger we face is not any particular kind of thought. The greatest danger we face is absence of thought.
We should not forget that our tradition is one of protest and revolt, and it is stultifying to celebrate the rebels of the past ... while we silence the rebels of the present.
America was born of revolt, flourished in dissent, became great through experimentation.
Men in authority will always think that criticism of their policies is dangerous. They will always equate their policies with patriotism, and find criticism subversive.
And the same things look bent and straight when seen in water and out of it, and also both concave and convex, due to the sight's being mislead by the colors, and every sort of confusion of this kind is plainly in our soul. And, then, it is because they take advantage of this affection in our nature that shadow painting, and puppeteering, and many other tricks of the kind fall nothing short of wizardry.
I have a hard time figuring out what kind of box to put me in, too, because I don't know exactly what's going on around me or why. But I need to stay outside of boxes because then I can look at what's inside of them without being part of them.
In mathematics and science we solve our problems as well as create them. But in art and philosophy things are not so simple.
Masonry is not a religion._x000D_ He who makes of it a religious belief, falsifies and denaturalizes it.
To understand is nothing, but to be understood-that is the problem and the source of anguish. The soul throbs and would have the other know-but can not and feels isolated. Then come gestures, words, awkward explanations and material symbols for imponderable outbursts of feeling-and the soul despairs.
Whatever is received is received according to the nature of the recipient.
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