No human right is more important than free speech. Without it no other rights can be asserted and defended. Free speech—the right of anyone to criticize and evaluate the claims of anyone else—is the best environment for discovering political, social, economic, and scientific truths. Political, religious, and ideological absolutists cannot tolerate criticism that punctures and wounds their delusions and dogmas. They look for ways to shut the offensive speakers up, including murder. Reason Science Correspondent Ronald Bailey explains in his review of The Tyranny of Silence that there is no freedom of speech without the freedom to offend.