STEPHEN L. CARTER: Climate-Change Skeptics Have a Right to Free Speech, Too. “I am old-fashioned enough to believe that the cure for bad speech is good speech. Yes, it’s a cliche. But it’s also a useful reminder. Nobody is forced to enter public debate. Once you’re there, it’s rough and tumble. Unfair attacks are as common as dew and sunshine, and everybody’s reputation takes a beating. That’s the price of freedom.”