In this way, there are three degrees of freedom that represent each color. This representation of colors was an important early step toward their systematization, replacing color perception by the human eye with an objective system. Over time, Ostwald's advances in color science became part of the HSL and HSV color system. Much of Ostwald's work on systematization of color was done in collaboration with Deutscher Werkbund, which was an association of painters and architects. Scholarly journals and societies In 1887, Ostwald founded the peer-reviewed scientific journal Zeitschrift für Physikalische Chemie, specializing in original research in the field of physical chemistry. He served as its editor-in-chief until 1922. In 1894, Ostwald formed the German Electrochemical Society which ultimately became the Deutsche Bunsen-Gesellschaft für angewandte physikalische Chemie [German Bunsen-Society for Applied Physical Chemistry]. He created the journal Klassiker der exakten Wissenschaften in 1889, of which more than 250 volumes have been published. As part of his interest in philosophy, in 1902 Ostwald started the journal Annalen der Naturphilosophie (Annales of Natural Philosophy). In 1927, he initiated the journal Die Farbe (Colour). Ostwald was one of the directors of the Die Brücke institute in Munich, and he played a role in its founding in 1911. The institute was sponsored, significantly, from Ostwald's Nobel Prize money. Through the institute, Ostwald's intention was to develop a standardized system for scholarly publications. In 1911, Ostwald founded the Association of Chemical Societies, which sought to organize and improve the efficiency of various chemical societies. The association is an example of a scientific society. Ostwald served as the first president of the Association of Chemical Societies. Scholarly contributions to humanities and politics In addition to his research in chemistry, Wilhelm Ostwald was productive in a broad range of fields. His published work, which includes numerous philosophical writings, contains about forty thousand pages. Ostwald was also engaged in the peace movement of Berta von Suttner. Among his other interests, Ostwald was a passionate amateur painter who made his own pigments. He left more than 1,000 paintings along with 3,000 pastels and color studies. For Ostwald, science and the arts were mutually supportive areas of engagement. Ostwald regarded science and the arts as having a common aim, that of "coping with the infinite diversity of appearances through the formation of appropriate concepts"... Towards this aim, science builds "intellectual ideas; art constructs visual ones." Ostwald developed a strong interest in