"'In Rosa Luxemburg the socialist idea was a dominating and powerful passion of both heart and brain, a truly creative passion which burned ceaselessly...She was the sharp sword, the living flame of Revolution.' So wrote her friend, Clara Zetkin. Sixty years after Rosa Luxemburg was murdered, her ideas are still the subject of passionate debate. Tony Cliff's book, first published in 1959, remains the best short introduction to those ideas. Using whereever possible Rosa Luxemburg's own words, it sets out her thinking on reform and revolution, mass strikes, the Blosheviks, imperialism, and economics." --Back cover.