The remedy for speech that is ...

The remedy for speech that is false is speech that is true. This is the ordinary course in a free society. The response to the unreasoned is the rational; to the uninformed, the enlightened; to the straight-out lie, the simple truth.
 Anthony Kennedy

Quotes from the same author

The lessons of the First Amendment are as urgent in the modern world as the 18th Century when it was written. One timeless lesson is that if citizens are subjected to state-sponsored religious exercises, the State disavows its own duty to guard and respect that sphere of inviolable conscience and belief which is the mark of a free people.
 Anthony Kennedy
The federal sentencing guidelines should be revised downward. By contrast to the guidelines, I can accept neither the necessity nor the wisdom of federal mandatory minimum sentences. In too many cases, mandatory minimum sentences are unwise and unjust.
 Anthony Kennedy
Family members have a personal stake in honoring and mourning their dead and objecting to unwarranted public exploitation that, by intruding upon their own grief, tends to degrade the rites and respect they seek to accord to the deceased person who was once their own.
 Anthony Kennedy
It is proper that we acknowledge the overwhelming weight of international opinion against the juvenile death penalty.
 Anthony Kennedy
First Amendment freedoms are most in danger when the government seeks to control thought or to justify its laws for that impermissible end. The right to think is the beginning of freedom, and speech must be protected from the government because speech is the beginning of thought.
 Anthony Kennedy