The International Socialist Congress which met at Stuttgart in 1907 prepared and foreshadowed the sorry history of Rosa Luxemburg's later life. On that occasion she drafted, together with Lenin, a resolution which demanded that the workers of the world should make any future war an opportunity for the destruction of the capitalist system. Unlike so many others, she stuck to her resolution when, seven years later, the time of testing came. The result was that she had to spend nearly the whole of the first World War in jail, either under punishment or in protective custody. But imprisonment did not mean inactivity. In 1916, there appeared in Switzerland her book _Die Krise der Sozialdemokratie_, which assailed the leaders of the German labour party for their patriotic attitude and called the masses to revolutionary action. The foundation of the Spartacus League in 1917, the germ cell out of which the Communist Party of Germany was soon to develop, was vitally connected with the dissemination of Rosa Luxemburg's aggressive sentiments. The collapse of the _Kaiserreich_ on 11 November 1918, gave Rosa Luxemburg her freedom and an undreamt-of range of opportunities. The two months that followed must have been more crowded and more colourful than all her previous life taken together. But the end of her career was imminent. The fatal Spartacus week, an abortive rising of the Berlin workers, led on 15 January 1919, to her arrest by a government composed of former party comrades. During her removal to prison she was attacked and severely beaten by soldiers belonging to the extreme right, a treatment which she did not survive. Her body was recovered days later from a canal. A type not unlike Trotsky, Rosa Luxemburg had her tender and sentimental side, which comes to the surface in her correspondence, especially in the _Briefe aus dem Gefaengnis_ printed in 1922. As a thinker she showed considerable honesty and independence of mind. _The Accumulation of Capital_, first published in 1913, which is undoubtedly her finest achievement, reveals her as that rarest of all rare phenomena--a Marxist critical of Karl Marx. W. STARK INTRODUCTION Academic economists have recently returned from the elaboration of static equilibrium to the classical search for a dynamic model of a developing economy. Rosa Luxemburg, neglected by Marxist and academic economists alike, offers a theory of the dynamic development of capitalism which is of the greatest interest. The book is one of considerable difficulty (apart from the vivid historical chapters), and to those accustomed only to academic analysis the difficulty is rendered well-nigh insurmountable by the Marxist terminology in which it is expressed. The purpose of this preface is to provide a glossary of terms, and to search for the main thread of the argument (leaving the historical illustrations to speak for themselves) and set it out in simpler language.