Karl Marx en zijne voorgangers

Socialism and American ideals

An inquiry into the permanent causes of the decline and fall of powerful and wealthy nations

Socialism and Modern Science (Darwin, Spencer, Marx)

The Evolution of Modern Capitalism: A Study of Machine Production

The Stages in the Social History of Capitalism

Miscellaneous Aphorisms; The Soul of Man

The Place of Science in Modern Civilisation, and Other Essays

The Bolsheviki and World Peace

Principles of Political Economy

An Inquiry into the Principles of Political Oeconomy (Vol. 2 of 2) Being an essay on the science of domestic policy in free nations. In which are particularly considered population, agriculture, trade, industry, money, coin, interest, circulation, banks, exchange, public credit, and taxes

L'évolution actuelle du monde: illusions et réalités