Rodin pays them to furnish him constantly with the sight of the nude moving with all the freedom of life. He observes them without ceasing, and it is thus that he has long since become familiar with the sight of muscles in movement. The nude, which for us moderns is an exceptional revelation and which even for the sculptors is generally only an apparition whose length is limited to a sitting, has become to Rodin a customary sight. The constant familiarity with the human body which the ancient Greeks acquired in watching the games—the wrestling, the throwing of the discus, the boxing, the gymnastics, and the foot races—and which permitted their artists to talk naturally on the subject of the nude, the creator of the _Penseur_ has made sure of by the continual presence of unclothed human beings who come and go before his eyes. In this way he has learned to read the feelings as expressed in every part of the body. The face is generally considered as the only mirror of the soul; the mobility of the features of the face seems to us the only exterior expression of the spiritual life. In reality there is not a muscle of the body which does not express the inner variations of feeling. All speak of joy or of sorrow, of enthusiasm or of despair, of serenity or of madness. Outstretched arms, an unconstrained body, smile with as much sweetness as the eyes or the lips. But to be able to interpret every aspect of the flesh, one must have been drawn patiently to spell out and to read the pages of this beautiful book. The masters of the antique did this, aided by the customs of their civilization. Rodin does this in our own day by the force of his own will. He follows his models with his earnest gaze, he silently savors the beauty of the life which plays through them, he admires the suppleness of this young woman who bends to pick up a chisel, the delicate grace of this other who raises her arms to gather her golden hair above her head, the nervous vigor of a man who walks across the room; and when this one or that makes a movement that pleases him, he instantly asks that the pose be kept. Quick, he seizes the clay, and a little figure is under way; then with equal haste he passes to another, which he fashions in the same manner. [Illustration: STUDY FOR A HAND By Rodin Photograph reproduced by permission of the Metropolitan Museum of Art ] [Illustration: STUDY FOR A FIGURE By Rodin Photograph reproduced by permission of the Metropolitan Museum of Art ] One evening when the night had begun to darken the atelier with heavy shadows, I had a talk with the master on his method.