"On the one hand, we have the mass; on the other, its historic goal, located outside of existing society. On one hand, we have the day-to-day struggle; on the other, the social revolution. It follows that this movement can best advance by tacking betwixt and between the two dangers by which it is constantly being threatened. One is the loss of its mass character; the other, the abandonment of its goal. One is the danger of sinking back to the condition of a sect; the other, the danger of becoming a movement of bourgeois social reform."