The centuries-old authority of the common law courts in England to develop law case by case and to apply statute law—"legislating from the bench"—is a traditional function of courts, which was carried over into the U.S. system as an essential component of the "judicial power" specified by Article III of the U.S. constitution. Justice Oliver Wendell Holmes Jr. summarized centuries of history in 1917, "judges do and must legislate” (in the federal courts, only interstitially, in state courts, to the full limits of common law adjudicatory authority).