Emanuel Swedenborg's system of correspondences is one of the most influential theories in the history of ideas. Instrumental in the rise of Romanticism, Symbolism and Modernism, and cited as key to the work of Goethe, R.W. Emerson, Honor de Balzac, Charles Baudelaire, Wassily Kandinsky and Arnold Schoenberg, to name but a few, it offers to poets, artists, writers and composers a blueprint for navigating the gap between the material world and non-material...