But the technical accomplishments of learning represent but a fragment of Darmesteter's amazing mental activity. He wrote a striking book on the Mahdi, the tenacious belief in the Mohammedan Messiah taking hold on his imagination. He was versed in English literature, edited Shakespeare, and introduced his countrymen to Browning. While in Afghanistan on a philological mission he gathered, merely as a side pursuit, a unique collection of Afghan folk-songs, and the result was a fascinating and valuable paper in a new field. He helped to found a leading French review. Articles of travel, critiques on subjects political, religious, literary, and social, fell fast from his pen. In his general essays on these broader, more vital aspects of thought and life, he is an artist in literary expression, a writer with a distinct and great gift for form. Here his vigorous mind, ample training, his humanistic tastes and humanitarian aspirations, are all finely in evidence. The English reader who seeks an introduction to Darmesteter is directed to his 'Selected Essays,' translated by Helen B. Jastrow, edited with a memoir by Professor Morris Jastrow, Jr. (Houghton, Mifflin and Company, Boston). There is a translation by Ada S. Ballin of his 'The Mahdi' (Harper and Brothers, New York); and in the Contemporary Review for January, 1895, is a noble appreciation of Darmesteter by his friend Gaston Paris. In the 'Sacred Books of the East' will be found an English rendering of the Avesta by Darmesteter and Mills. As a thinker in the philosophical sense Darmesteter was remarkable. Early breaking away from orthodox Judaism, his philological and historical researches led him to accept the conclusions of destructive criticism with regard to the Bible; and a disciple of Renan, he became enrolled among those scholars who see in science the one explanation of the universe. But possessing, along with his keen analytic powers, a nature dominantly ethical, he made humanity his idol. His patriotism for France was intense; and, a Jew always sympathetic to the wonderful history of his people,--in his later years by a brilliant, poetical, almost audacious interpretation of the Old Testament,--he found a solution of the riddle of life in the Hebrew prophets. What he deemed their essential faith--Judaism stripped of ritual and legend--he declared to be in harmony with the scientific creed of the present: belief in the unity of moral law,--the Old Testament Jehovah; and belief in the eventual triumph of justice upon this earth,--the modern substitute for the New Testament heaven. This doctrine, which in most hands would be cold and comfortless enough, he makes vital, engaging, through the passionate presentation of an eloquent lover of his fellow-man. In a word, Darmesteter was a Positivist, dowered, like that other noble Positivist George Eliot, with a nature sensitive to spiritual issues.