"In the final analysis, a drawing simply is no longer a drawing, no matter how self-sufficient its execution may be. It is a symbol, and the more profoundly the imaginary lines of projection meet higher dimensions, the better"

Paul Klee's quote talks with the suggestion that a drawing is more than just a physical depiction of a picture. It is an icon that can represent something much deeper and more significant. The "fictional lines of forecast" refer to the lines and shapes that make up the drawing, and also how they can be used to stand for something beyond the physical. The "greater dimensions" describe the idea that an illustration can represent something greater than what is seen on the surface. It can stand for emotions, suggestions, and also even spiritual concepts. Ultimately, an illustration is an effective device for communicating meaning as well as feeling, and the even more deeply the imaginary lines of projection meet higher dimensions, the a lot more effective the illustration can be.