By way of introduction to the comprehensive addresses of the two distinguished delegates who have travelled four or five thousand miles to lay before this Section, and, through publication, before the world, the past history and the present problems of the library, it has seemed to me appropriate that, as chairman, I should present a brief plea for the consideration of the library as one of the greatest factors in human progress. It has existed, though not in its present form or with its present functions, from the dawn of recorded civilization. It is itself the record of civilization; and without it there can be no records and no civilization. It is the repository, the custodian, the preserver of all the arts and sciences and the principal means of disseminating all knowledge. With the school and the church it forms the tripod necessary to the stable equilibrium of society. Let me briefly summarize the functions of the public library. 1. It doubles the value of the public school instruction, on which is expended more than ten times the cost of the library. 2. It enables the children who leave school at an early age (an overwhelming majority) to continue their education while earning their living. It provides for the education of the adults who have lacked or failed to utilize early opportunities. This is of special importance in a country like the United States, where one of the greatest political problems is the assimilation of a vast influx of ignorant foreigners of all races and languages. 3. It supplies books and periodicals needed for the instruction of artisans, mechanics, manufacturers, engineers, and all others whose work requires technical knowledge[6]--all persons on whom depends the industrial progress of the community. 4. It furnishes information and inspiration to ministers, teachers, journalists, authors, physicians, legislators--all persons on whose work depend the intellectual, moral, sanitary, political and religious welfare and advancement of the people. 5. It is the stimulus and the reliance of the literary and study clubs, which, especially among the women, have done much not only for individual self-culture but also for civic enlightenment and social betterment. This represents its numerous post-graduate courses, which are taken by constantly increasing numbers. 6. It has philosophers and theologians to explain and expound and to exhort those who are willing to listen; but, far better, it has poets and dramatists and novelists--who compel a hearing and impress on heart as well as mind the fundamental truths of morality and religion.