Vigorous, human, interesting biography of Marx' fellow worker for the cause of world revolution and communism. A compelling personality -- trying at times, but a factor to be reckoned with always. Picture of his boyhood, the bigotted elements in his training, his break with traditions and his family, his education and business ventures, his meeting with Marx and knowledge that he has found his life work. The man comes alive, even though comparatively little space is given to his personal life and problems. An important book for the Marxian followers. Essential for public and college libraries.