For David Smith drawing and making sculpture went hand-in-hand. Both were poetically inspired by the lines and shapes he perceived in nature, and he referred to his sculptures as “drawings in space.” He drew constantly, as the image of his living room below shows, because drawing was more fast-moving in comparison to the time-consuming and physical nature of making sculpture. To capture his constant work stream, he titled each drawing with month, day, and year, sometimes adding the Greek letters Δ (Delta) Σ (Sigma) to stand in for his initials DS. His drawings were mostly executed with egg yolks and Chinese inks, using a brush, to give his lines mass and volume. He worked out his thoughts in drawings, but rarely is there a one-to-one relationship of a drawing to a sculpture.