Nicholas Roerich created this painting, "Rostov Veliky. Interior of church," with oil on canvas. The materiality of the paint itself is essential here. Roerich has applied it with such apparent speed, using broad strokes. You can almost feel the energy of his hand as he worked. Note how the texture of the paint creates depth and shadow. It captures the worn surfaces of the architecture. Roerich was interested in spiritual themes, and these are reflected in the painting's subject. But the way he handled his materials also conveys a sense of something ancient and enduring. By focusing on the tactile qualities of the paint, Roerich elevates a simple interior scene. He transforms it into an almost haptic experience for the viewer. It reminds us that the act of painting is itself a kind of craft. It requires physical skill and intimate knowledge of one's materials.