Old frontiers have disappeared in science and art and literature. We have Maeterlinck, a poet writing of bees, Poincaré, a mathematician opening our eyes to the mystic gulfs of space; solid matters resolved into mist, and the law of gravitation questioned. The new horizons beckon ardent youth bent on conquering the secrets of life. And there are more false beacon-lights than true. But if this is an age of specialists a man occasionally emerges who contradicts the formula. De Gourmont was at base a poet; also a dramatist, novelist, raconteur, man of science, critic, moralist of erudition, and, lastly, a philosopher. Both formidable and bewildering were his accomplishments. He is a poet in his Hieroglyphes, Oraisons mauvaises, Le Livre des Litanies, Les Saintes du Paradis, Simone, Divertissements--his last appearance in singing robes (1914); he is a raconteur--and such tales--in Histoires magiques, Prose moroses, Le Pèlerin du silence, D'un Pays lointain, Couleurs; a novelist in Merlette--his first book--Sixtine, Le Fantôme, les Chevaux de Diomède, Le Songe d'une Femme, Une Nuit au Luxembourg, Un C[oe]ur virginal; dramatist in Théodat, Phénissa, Le vieux Roi, Lilith; as master critic of the æsthetics of the French language his supremacy is indisputable; it is hardly necessary to refer here to Le Livre des Masques, in two volumes, the five volumes of Promenades littéraires, the three of Promenades philosophiques; as moralist he has signed such works as l'Idealisme, La Culture des Idées, Le Chemin de Velours; historian and humanist, he has given us Le Latin mystique; grammarian and philologist, he displays his learning in Le Problème du Style, and Esthétique de la Langue française, and incidentally flays an unhappy pedagogue who proposed to impart the secret of style in twenty lessons. He edited many classics of French literature. His chief contribution to science, apart from his botanical and entomological researches, is Physique de l'Amour, in which he reveals himself as a patient, thorough observer in an almost new country. And what shall we say to his incursions into the actual, into the field of politics, sociology and hourly happenings of Paris life; his Epilogues (three volumes), Dialogues des Amateurs, the collected pages from his monthly contributions to _Mercure de France_? Nothing human was alien to him, nor inhuman, for he rejected as quite meaningless the latter vocable, as he rejected such clichés as "organic and inorganic." Years before we heard of a pluralistic universe De Gourmont was a pragmatist, though an idealist in his conception of the world as a personal picture. Intensely interested in ideas, as he was in words, he might have fulfilled Lord Acton's wish that some one would write a History of Ideas. At the time of his death the French thinker was composing a work entitled La Physique des M[oe]urs, in which he contemplated a demonstration of his law of intellectual constancy.