Through his sustained and heroic appeal to what is most spiritual in man, Eucken has ennobled the significance and the mission of philosophy. He aims at developing, not a new category, but a new culture, and holds that it is the privilege of philosophy, by penetrating to what is most inward in human nature, to bring a religious inspiration to bear upon the problems of the world of human labor. Eucken's philosophy is a philosophy of life. It is a philosophy of reality as well. It treats of the sources of man's strength, and the meaning and purpose of his spiritual endeavor. And can there be anything more real than the activity of a life that has consciously realized the true sources of its power and the goal of its ultimate aspirations? New York G. P. Putnam's Sons London Works by Dr. Rudolf Eucken _In the Crown Theological Library Series_ The Life of the Spirit An Introduction to Philosophy Translated by F. L. Pogson, M.A. _12º, $1.50 net. By mail, $1.65_ _Second Edition. With Introductory Note by Author_ "Germany has again given us a great constructive philosopher, whose influence has gone out through all the thinking world.... No one can read these powerful pages without understanding that a strong thinker has arisen among us, and without enlargement and deepening of his own thought."--_Congregationalist._ "With Bergson of France, he is the most influential personal factor in arming contemporary thinkers for the fray against materialism and irreligion."--_Christian Science Monitor._ Knowledge and Life _12º._ "No one is having more influence upon the spiritual life and religious thought of Europe, at the present time, than Prof. Rudolf Eucken. His books ... are making a deep impress upon thinking people."--_Christian Work._ Religion and Life _16º. Frontispiece. 50 cts. net. By mail, 60 cts._ "The work is able, as may naturally be expected of Prof. Eucken. But it is more. The author is very much in earnest and he is anxious for men to see the great need of religion in their lives. In this book we have the best of his mind and heart." _Boston Transcript._ "The philosophy of Eucken shares with that of Bergson the keenest living interest of thoughtful men of all classes at the present day.... Eucken has endeavored in this book to put his constructive system into the clearest and most elaborate form."--_Continent._ New York G. P. Putnam's Sons London Works by Dr. Rudolf Eucken _In the Theological Translations Series_ The Truth of Religion Translated by W. Tudor Jones, Ph.D. _Second English Edition. Translated from the Third and Revised German Edition with a special Preface by the Author_ _8º. $3.50 net. By mail, $3.75_