(6) Keller, Albert G. Societal Evolution. New York, 1915.
(7) Dellepiane, A. "Le Progrès et sa formule. La lutte pour le progrès," Revue Internationale de sociologie, XX (1912), 1-30.
(8) Burgess, Ernest W. The Function of Socialization in Social Evolution. Chicago, 1916.
(9) Ellwood, C. A. "The Educational Theory of Social Progress," Scientific Monthly, V (1917), 439-50.
(10) Bosanquet, Helen. "The Psychology of Social Progress," International Journal of Ethics, VII (1896-97), 265-81.
(11) Perry, Ralph Barton. The Moral Economy. Chap, iv, "The Moral Test of Progress," pp. 123-70. New York, 1909.
(12) Patten, S. N. "Theories of Progress," American Economic Review, II (1912), 61-68.
(13) Alexander, H. B. "The Belief in God and Immortality as Factors in Race Progress." Hibbert Journal, IX (1910-11), 169-87.
VI. UTOPIAS
(1) Plato. The Republic of Plato. Translated into English by Benjamin Jowett. 2 vols. Oxford, 1908.