Das Kapital in the British Library, London. At the time of his death (1883), Marx had prepared the manuscript for "Das Kapital, Volume IV", a critical history of theories of surplus value of his time, the nineteenth century. The philosopher Karl Kautsky (1854–1938) published a partial edition of Marx's surplus-value critique and later published a full, three-volume edition as "Theorien über den Mehrwert" ("Theories of Surplus Value", 1905–1910). The first volume was published in English as "A History of Economic Theories" (1952). "Capital, Volume I" (1867) was published in Marx’s lifetime, but he died in 1883 before completing the manuscripts for "Capital,
Karl Marx move to Germany, Marx decided to emigrate to Brussels in Belgium in February 1845. However, to stay in Belgium he had to pledge not to publish anything on the subject of contemporary politics. In Brussels, Marx associated with other exiled socialists from across Europe, including Moses Hess, Karl Heinzen and Joseph Weydemeyer. In April 1845, Engels moved from Barmen in Germany to Brussels to join Marx and the growing cadre of members of the League of the Just now seeking home in Brussels. Later, Mary Burns, Engels' long-time companion, left Manchester, England to join Engels in Brussels. In mid-July 1845,