"As Prince Bismarck, in the ’60s, wanted to move the “Acheron” of socialism, ... it was of course not love for socialism or knowledge of socialism that led Prince Bismarck to do this. He understood nothing about socialism at that time, and never did understand anything about it down to his death; in fact, he never had any conception of the moving forces of political and social life at all. There probably never lived at any time in any country a “statesman” who was less scientific, who had less knowledge, and who relied so purely on experience and a sort of half-gambler, half-peddler cunning, as Bismarck. Those offers to socialists place in the clearest light the untruthfulness of Prince Bismarck’s claim that he always regarded the social democracy as incompatible with the existence of the state. Bismarck wanted to use socialism for the purpose of breaking up and dissolving the bourgeois liberal opposition, especially the Progressive party. This, in itself, is the most conclusive proof that he had no conception of the real nature of socialism. Of course the fate of the boy magician was repeated. The elemental force which was conjured up grew over the head of the dabbler, and he did not get the best of socialism; socialism got the best of him."

“What is it that has made of us in Germany the pivotal part? ... It is the avalanche-like increase of our supporters that gradually, with the certainty of a natural law, or more correctly of a natural force, grows from tens of thousands to hundreds of thousands, and from hundreds of thousands to millions, and is daily increasing, bidding defiance to our opponents and driving them into impotent rage. And this avalanche-like increase has come, and is coming, as a consequence of our opposition to and struggle with all other parties.”

“It would be an unparalleled case of flying the track and going astray if the German Social Democracy, which has had such wonderful success and such a wonderful growth for the very reason that it has marched ahead unterrified on the basis of the class struggle, should suddenly face about and plunge into mistakes, the avoidance of which has been the power and pride of our party, and has put the German Social Democracy at the head of the international social democracy of all countries.”

“We Social Democrats dare not be like the other parties, all of whom are equally guilty of the injustices of the present system and equally responsible for them. Every one who suffers under these injustices looks to us for deliverance. Every one of us has had these victims of society after failing to get justice from the courts, from the government, from the Emperor himself, and from all the other parties, come to us as the last and only ones that can help them. They do not know our scientific program; they do not know what capital and capitalism mean; but they have the belief, the feeling, that we are a party that can help when all other parties fail. This belief is for us an inexhaustible source of power. It was a similar faith of despair that spread more and more in the decaying Roman empire and slowly undermined the heathen world until it finally collapsed. We give up this inexhaustible source of power if we ally ourselves with other parties and drive suffering humanity from us by saying to it: “We are not essentially different from the others.” Once the boundary line of the class struggle is wiped away and we have started upon the inclined plane of compromise, there is no stopping. Then we can only go down and down until there is nothing deeper.”

“We cannot traffic in our principles, we can make no compromise, no agreement with the ruling system. We must break with the ruling system and fight it to a finish. It must fall that socialism may arise, and we certainly cannot expect from the ruling class that it will give to itself and its domination the death blow.”

“Distrust was counted as a democratic virtue, and over-confidence as a democratic vice.”

“The highest triumph of Bismarckian politics carried its downfall and bankruptcy within it.”