The book "On the Spiritual in Art" by Wassily Kandinsky is one of the key works in the history of art. In this work, the author reveals his unique ideas about the role of art in the human spirit. Kandinsky explores the influence of color, form and line on our inner world and gives them a spiritual meaning. He considers art as a tool for expressing deep feelings and ideas, playing an important role in the development of human spirituality. "About the spiritual in art" is a work that forces readers to rethink the perception of art and immerse themselves in the world of beauty and spirituality.