Sociology is the science whose object is to interpret the meaning of social action and thereby give a causal explanation of the way in which the action proceeds and the effects which it produces. By action in this definition is meant the human behaviour when and to the extent that the agent or agents see it as subjectively meaningful [...] the meaning to which we refer may be either (a) the meaning actually intended either by an individual agent on a particular historical occasion or by a number of agents on an approximate average in a given set of cases, or (b) the meaning attributed to the agent or agents, as types, in a pure type constructed in the abstract. In neither case is the meaning to be thought of as somehow objectively correct or true by some metaphysical criterion. This is the difference between the empirical sciences of action, such as sociology and history and any kind of a priori discipline, such as jurisprudence, logic, ethics, or aesthetics whose aim is to extract from their subject-matter correct or valid meaning.