(or left untranslated)—refers to groups based on feelings of togetherness and mutual bonds, which are felt like a goal to be kept up, their members being means for this goal. Gesellschaft—often translated as society—on the other hand, refers to groups that are sustained by it being instrumental for their members' aims and goals. The equilibrium in Gemeinschaft is achieved through means of social control, such as morals, conformism, and exclusion, while Gesellschaft keeps its balance through police, laws, tribunals, and prisons. Amish and Hasidic communities are examples of Gemeinschaft, while states are types of Gesellschaft. Rules in Gemeinschaft are implicit, while Gesellschaft has explicit rules (written laws). Gemeinschaft may be exemplified historically by a family or a neighborhood in a pre-modern (rural) society; Gesellschaft by a joint-stock company or a state in a modern society, i.e. the society when Tönnies lived. Gesellschaft relationships arose in an urban and capitalist setting, characterized by individualism and impersonal monetary connections between people. Social ties were often instrumental and superficial, with self-interest and exploitation increasingly the norm. Examples are corporations, states, or voluntary associations. In his book Einteilung der Soziologie (Classification of Sociology) he distinguished between three disciplines of sociology, being Pure or Theoretical (reine, theoretische) Sociology, Applied (angewandte) Sociology, and Empirical (emprische) Sociology. His distinction between social groupings is based on the assumption that there are only two primary forms of an actor's will to approve of other men. For Tönnies, such approval is by no means self-evident; he is pretty influenced by Thomas Hobbes. Following his "essential will" ("Wesenwille"), an actor will see himself as a means to serve the goals of social grouping; very often, it is an underlying, subconscious force. Groupings formed around an essential will are called a Gemeinschaft. The other will is the "arbitrary will" ("Kürwille"): An actor sees a social grouping as a means to further his individual goals, so it is purposive and future-oriented. Groupings around the latter are called Gesellschaft. Whereas the membership in a Gemeinschaft is self-fulfilling, a Gesellschaft is instrumental for its members. In pure sociology—theoretically—these two standard types of will are to be strictly separated; in applied sociology—empirically—they are always mixed. Gender Polarity in "Gemeinschaft und Gesellschaft" What is less well-known when discussing the work of Tönnies is that he frequently uses gender concepts to explain his main ideas. Essential will-arbitrary will, Gemeinschaft-Gesellschaft, are all thought of in terms of the polarity