The characteristic motto of the Knights of Labor was: "An injury to one is the concern of all"--the same slogan which is today prominent among the watchwords of the I. W. W. The Knights proposed, first to bring within the folds of organization every department of productive industry, making knowledge a standpoint for action and "industrial, moral worth, not wealth, the true standard of individual and national greatness"; second, "to secure to the toilers a proper share of the wealth that they create ..."; third, the substitution of arbitration for strikes; and, fourth, the reduction of hours of labor to eight per day.[12] The Knights advocated government ownership of telephones, telegraphs, and railroads; emphasized the principle of coöperation; admitted women and negroes, and believed in having working-class politics in the union and the union in working-class politics. "The fundamental principle on which the organization was based was coöperation," said Grand Master Workman Powderly, "... the barriers of trade were to be cast aside; the man who toiled, no matter at what, was to receive and enjoy the just fruits of his labor...."[13] It was originally a secret organization, but that feature was later abandoned. The following restriction on membership appears in the constitution of the Local Assemblies: "... no lawyer, banker, professional gambler, or stock broker can be admitted." Prior to 1881 physicians were also excluded. It is composed of Local Assemblies (local unions) controlled by District Assemblies, a General Assembly and a Grand Master Workman. These parts were closely related to each other in a centralized system. Centralization of administrative authority was considered highly important--indeed, it was thought indispensable in order successfully to unite every branch of skilled and unskilled labor--a task the Knights considered of prime importance. They differed, however, from our more radical I. W. W.'s of today in placing no little confidence in political methods, maintaining as they did for many years a legislative lobbying committee at Washington. In addition they believed, with the I. W. W., in the sympathetic strike, the boycott--and the necessity of solidarity among all the ranks of labor. The following excerpt from the _Final Report of the United States Industrial Commission_ (1900) explains the administrative policy of the organization: