Forerunners of Modern Socialism (German: Die Vorläufer des neueren Sozialismus) is a four volume work that documents the history of primitive communist and socialist ideas, edited by Karl Kautsky and including contributions by a number of prominent intellectuals of the Second International, including Eduard Bernstein, Paul Lafargue, C. Hugo, Franz Mehring, and Georgii Plekhanov. The first volume was published in 1895.