As a pioneer of abstract art, Kandinsky believed that color and form had the power to evoke strong emotions and convey deep spiritual truths. In "Small Worlds I," the vibrant colors and expressive brushstrokes contribute to the overall dynamic and expressive nature of the composition. The central circle and the surrounding shapes and lines create a sense of movement and energy, inviting the viewer to explore the layers of meaning and emotion within the painting. Overall, "Small Worlds I" is a vibrant and expressive example of Kandinsky's abstract style.