Ferdinand Tönnies was born into a wealthy farmer's family in Nordfriesland in Schleswig - Holstein, then under Danish rule. He studied at the universities of Jena, Bonn, Leipzig, Berlin, and Tübingen. He received a doctorate in Tübingen in 1877 (with a Latin thesis on the ancient Siwa Oasis). Four years later he became a private lecturer at the University of Kiel. Because he had sympathized with the Hamburg dockers' strike of 1896, the conservative Prussian government considered him to be a social democrat, and Tönnies was not called to a professorial chair until 1913. He held this post at the university of Kiel for only three years. He returned to the university as a professor emeritus in 1921 and taught until 1933 when he was ousted by the Nazis, due to his earlier publications that criticized them.

Tönnies, the first German sociologist proper, published over 900 works and contributed to many areas of sociology and philosophy. Many of his writings on sociological theories — including Gemeinschaft und Gesellschaft (1887) — furthered pure sociology. He coined the term Voluntarism. Tönnies also contributed to the study of social change, particularly on public opinion, customs and technology, crime, and suicide. He also had a vivid interest in methodology, especially statistics, and sociological research, inventing his own technique of statistical association.

Tönnies distinguished between two types of social groupings. Gemeinschaft — often translated as community (or left untranslated) — refers to groupings based on feelings of togetherness and on mutual bonds, which are felt as 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' individual aims and goals.

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.

His distinction between social groupings is based on the assumption that there are only two basic forms of an actor's will, to approve of other men. (For Tönnies, such an approval is by no means self-evident, he is quite 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 normal types of will are to be strictly separated; in applied sociology — empirically — they are always mixed.

Tönnies’ distinction between Gemeinschaft and Gesellschaft, like others between tradition and modernity, has been criticized for over - generalizing differences between societies, and implying that all societies were following a similar evolutionary path, which he has never proclaimed.