"There are many prices we pay for freedoms secured by the First Amendment; the risk of undue influence is one of them, confirming what we have long known: Freedom is hazardous, but some restraints are worse."

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All ideas having even the slightest redeeming social importance - unorthodox ideas, controversial ideas, even ideas hateful to the prevailing climate of opinion, have the full protection of the guarantees [of the First Amendment].

— William J. Brennan