"At the core of freedom of expression lies the need to ensure that truth and the common good are attained, whether in scientific and artistic endeavors or in the process of determining the best course to take in our political affairs. Since truth and the ideal form of political and social organization can rarely, if at all, be identified with absolute certainty, it is difficult to prohibit expression without impeding the free exchange of potentially valuable information. Nevertheless, the argument from truth does not provide convincing support for the protection of hate propaganda. Taken to its extreme, this argument would require us to permit the communication of all expression, it being impossible to know with absolute certainty which factual statements are true, or which ideas obtain the greatest good. The problem with this extreme position, however, is that the greater the degree of certainty that a statement is erroneous or mendacious, the less its value in the quest for truth. Indeed, expression can be used to the detriment of our search for truth; the state should not be the sole arbiter of truth, but neither should we overplay the view that rationality will overcome all falsehoods in the unregulated marketplace of ideas. There is very little chance that statements intended to promote hatred against an identifiable group are true, or that their vision of society will lead to a better world. To portray such statements as crucial to truth and the betterment of the political and social milieu is therefore misguided."