Simmel argued as early as 1900 that money was gaining increasing influence over society, politics, and the individual. The self-esteem of individuals and their outlook on life are increasingly determined by money. While the monetary economy has enabled a departure from feudal structures and the formation of democracies, in modern times, money has increasingly become an end in itself. The present edition of "The Philosophy of Money" reproduces the "Second, Enlarged Edition" of this work, which was published in Leipzig in 1907. Emendations of this text were made possible through comparison, and in cases of doubt, reference was made to the first edition of "The Philosophy of Money," which was published in 1900, as well as to texts and passages from essays on the same topic and pre-publications, and in one case.