— Rudolf Rocker anarcho-syndicalist writer and activist 1873 - 1958
Context: The deeper we trace the political influences in history, the more are we convinced that the "will to power" has up to now been one of the strongest motives in the development of human social forms. The idea that all political and social events are but the result of given economic conditions and can be explained by them cannot endure careful consideration. That economic conditions and the special forms of social production have played a part in the evolution of humanity everyone knows who has been seriously trying to reach the foundations of social phenomena. This fact was well known before Marx set out to explain it in his manner. A whole line of eminent French socialists like Saint–Simon, Considerant, Louis Blanc, Proudhon and many others had pointed to it in their writings, and it is known that Marx reached socialism by the study of these very writings.
Ch. 1 "The Insufficiency of Economic Materialism"