ABSTRACT
American jurisprudence will ever be indebted to Roscoe Pound. In the service of quickening our legal institutions and making the law effective for the task of wise "social engineering," he has combined profound insight, vast legal erudition, thorough acquaintance with the work of early and contemporary legal philosophers in England and the Continent, and a wide knowledge of the social sciences. And, in particular, any student interested in the problem to which this essay has been devoted, must be thankful to Pound for the light he has thrown on various phases of the strange quest of legal certainty.1
