A visitor in the _Salon Carre_ of the Louvre notes that there are arrayed before him pictures by Jan van Eyck and Memling, Raphael and Leonardo, Giorgione and Titian, Rembrandt and Metsu, Rubens and Van Dyck, Fouquet and Poussin, Velasquez and Murillo. Each one bears the distinctive impress of its creator. How different some of them, one from another,--the Virgin of Van Eyck from the Virgin of Raphael, Rembrandt's "Pilgrimsat Emmaus" from the "Entombment" by Titian. Yet between others there are common elements of likeness. Raphael and Titian are distinguished by an opulence of form and a luxuriance of color which reveal supreme technical accomplishment in a fertile land under light-impregnated skies. The rigidity and restraint of Van Eyck and Memling suggest the tentative early efforts of the art of a sober northern race. To a thoughtful student of these pictures sooner or later the question comes, Whence are these likenesses and these differences? Hitherto I have referred to the creative mind and executive hand as generically _the artist._ I have thought of him as a type, representative of all the great class of those who feel and express, and who by means of their expression communicate their feeling. Similarly I have spoken of _the work of art,_ as though it were complete in itself and isolated, sprung full-formed and panoplied from the brain of its creator, able to win its way and consummate its destiny alone. The type is conceived intellectually; in actual life the type resolves itself into individuals. So there are individual artists, each with his own distinctive gifts and ideals, each with his own separate experience of life, with his personal and special vision of the world, and his characteristic manner of expression. Similarly, a single work of art is not an isolated phenomenon; it is only a part of the artist's total performance, and to these other works it must be referred. The kind of work an artist sets himself to do is determined to some extent by the period into which he was born and the country in which he lived. The artist himself, heir to the achievements of his predecessors, is a development, and his work is the product of an evolution. A work of art, therefore, to be judged aright and truly appreciated, must be seen in its relation to its background, from which it detaches itself at the moment of consideration,--the background of the artist's personality and accomplishment and of the national life and ideals of his time.