Marx and Engels said: It is an unavoidable phenomenon, well established in the course of development, that people from the ruling class also join the proletariat and supply it with educated elements. This we have already clearly stated in the Manifesto. Here, however, two remarks are to be made: First, such people, in order to be useful to the proletarian movement, must bring with them really educated elements. This, however, is not the case with the great majority of German bourgeois converts. . . .They are completely deficient in real, factual, or theoretical material. Instead, there are efforts to bring superficial socialist ideas into harmony with the various theoretical viewpoints which the gentlemen from the universities, or from wherever, bring with them, and among whom one is more confused than the other, thanks to the process of decomposition in which German philosophy finds itself today. Instead of first studying the new science [scientific socialism] thoroughly, everyone relies rather on the viewpoint he brought with him, makes a short cut toward it with his own private science, and immediately steps forth with pretensions of wanting to teach it. Hence, there are among those gentlemen as many viewpoints as there are heads; instead of clarifying anything, they only produce arrant confusion -- fortunately, almost always only among themselves. Such educated elements, whose guiding principle is to teach what they have not learned, the party can well dispense with. Second, when such people from other classes join the proletarian movement, the first demand upon them must be that they do not bring with them any remnants of bourgeois, petty-bourgeois, etc., prejudices, but that they irreversibly assimilate the proletarian viewpoint. But those gentlemen, as has been shown, adhere overwhelmingly to petty-bourgeois conceptions. In so petty-bourgeois a country as Germany, such conceptions certainly have their justification, but only outside the Social-Democratic Labor party. If the gentlemen want to build a social-democratic petty-bourgeois party, they have a full right to do so; one could then negotiate with them, conclude agreements, etc., according to circumstances. But in a labor party, they are a falsifying element. If there are grounds which necessitates tolerating them, it is a duty only to tolerate them, to allow them no influence in party leadership, and to keep in mind that a break with them is only a matter of time. "STRATEGY AND TACTICS OF THE CLASS STRUGGLE" by KARL MARX and FREDERICK ENGELS September 17-18 1879 A Private Circulation Letter from Marx and Engels (First drafted by Engels) to Germany's Social-Democratic leadership