We shall never go wrong if we do what is opposed to the interests of…

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

we must never forget that we are not merely a socialist party, but a social democratic party because we have perceived that socialism and democracy are inseparable.

the party should depend exclusively upon the strength of the party, and not upon an alliance with parties which might have momentarily a common interest with us, but which in their political make-up are hostile to us and will remain …

For our party and for our party tactics there is but one valid basis: the basis of the class struggle, out of which the Social Democratic party has sprung up, and out of which alone it can draw the necessary strength to bid defiance to …

Socialism without democracy is pseudo-socialism, just as democracy without socialism is pseudo-democracy.

It was not possible by any allurements to take from the workingmen the recognition of the inseparability of socialism from democracy and of democracy from socialism.