Lassalle was undoubtedly a man of the most extraordinary endowments. The reader of his works feels that he is in the presence of a mind of a very high order. Both in his works and in his life we find an exceptional combination of gifts, philosophic power, eloquence, enthusiasm, practical energy, a dominating force of will. Born of a cosmopolitan race, which has produced so many men little trammelled by the conventionalism of the old European societies, he was to a remarkable degree original and free from social prejudice; was one of the men in whom the spirit of daring initiative is to a remarkable degree active. He had in fact a revolutionary temperament, disciplined by the study of German philosophy, by the sense of the greatness of Prussia’s historic mission, and by a considerable measure of practical insight, for in this he was not by any means wanting. In Marx we see the same temperament, only in his case it was stronger, more solid, sell-restrained, matured by wider reflection, and especially by the study of the economic development of Europe, continued for a period of forty years. But on the whole, Lassalle was a _vis intemperata_. He was deficient in sober-mindedness, self-control, and in that saving gift of common sense, without which the highest endowments may be unprofitable and even hurtful to their possessors and to the world. His ambitions were not pure; he had a histrionic as well as a revolutionary temperament; he was lacking also in self-respect; above all, he had not sufficient reverence for the great and sacred cause of which he had become the champion, a cause which is fitted to claim the highest motives, the purest ambitions, the most noble enthusiasms. His vanity, his want of self-restraint, his deficient sense of the seriousness of his mission as a Social Democratic leader, in these we see the failings that proved his undoing. Throughout the miserable intrigue in which he met his death a simple, straightforward sense of what was right and becoming would at once have saved him from ruin. Yet he was privileged to inaugurate a great movement. As the founder of the Social Democracy of Germany, he has earned a place on the roll of historic names. He possessed in a notable degree the originality, energy, and sympathy which fit a man to be the champion of a new cause.