Eavesdropping on the phone calls of U.S. citizens; demands by the FBI for records of library borrowings; establishment of military tribunals to try suspected terrorists, including U.S. citizens--many of the measures taken by the Bush administration since 9/11 have sparked heated protests. In Not a Suicide Pact, Judge Richard A. Posner offers a cogent and elegant response to these protests, arguing that personal liberty must be balanced with public...