Written by a lawyer and an economist, this is the first full-length economic study of tort law--the body of law that governs liability for accidents and for intentional wrongs such as battery and defamation. Landes and Posner propose that tort law is best understood as a system for achieving an efficient allocation of resources to safety--that, on the whole, rules and doctrines of tort law encourage the optimal investment in safety by potential injurers and potential victims.