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. InNot 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 safety in the face of grave national danger. Critical of civil libertarians who balk at any curtailment of their rights, even in the face of an