All who are weary and heavy laden; all who suffer under injustice; all who suffer from the outrages of the existing bourgeois society; all who have in them the feeling of the worth of humanity, look to us, turn hopefully to us, as the only party that can bring rescue and deliverance. And if we, the opponents of this unjust world of violence, suddenly reach out the hand of brotherhood to it, conclude alliances with its representatives, invite our comrades to go hand in hand with the enemy whose misdeeds have driven the masses into our camp, what confusion must result in their minds! ... It must be that for the hundreds and thousands, for the millions that have sought salvation under our banner, it was all a colossal mistake for them to come to us. If we are not different from the others, then we are not the right ones – the Savior is yet to come; and the Social Democracy was a false Messiah, no better than the other false ones! Just in this fact lies our strength, that we are not like the others, and that we are not only not like the others, and that we are not simply different from the others, but that we are their deadly enemy, who have sworn to storm and demolish the Bastile of Capitalism, whose defenders all those others are. Therefore we are only strong when we are alone. This is not to say that we are to individualise or to isolate ourselves. We have never lacked for company, and we never shall so long as the fight lasts. On the essentially true but literally false phrase about a “single reactionary mass,” the Social Democracy has never believed since it passed from the realm of theory to that of practice. We know that the individual members and divisions of the “single reactionary mass” are in conflict with each other, and we have always used these conflicts for our purposes. We have used opponents against opponents, but have never allowed them to use us.

The establishment, elaboration and clarifying of our program we leave to science, which in our present society is the business of only a few. But the practical application of our program, and the tactics of the party are the business of all; here all work together.

Diversity of opinions on theoretical points is never dangerous to the party. There are for us no bounds to criticism, and however great our respect may be for the founders and pioneers of our party, we recognize no infallibility and no other authority than science, whose sphere is ever widening and continually proves what it previously held as truths to be errors; destroys the old decayed foundations and creates new ones; does not stand still for an instant; but in perpetual advance moves remorselessly over every dogmatic belief.