The demand for equality as made by the proletariat has a double significance. Either it is, as was particularly the case at first, in the Peasants' War, for example, a natural reaction against social inequalities which were obvious, against the contrast between rich and poor, masters and slaves, luxurious and hungry, and as such it is simply an expression of revolutionary instinct finding its justification in that fact and in that fact alone. On the other hand it may arise from reaction against the bourgeois claims of equality from which it deduces more or less just and far reaching claims, serves as a means of agitation to stir the workers, by means of a cry adopted by the capitalists themselves, against the capitalists, and in this case stands or falls with bourgeois equality itself. In both cases the real content of the proletarian claims of equality is the abolition of classes. Every demand for equality transcending this is of necessity absurd. We have already given examples and can furnish many more when we come to consider Herr Duehring's prophecies of the future. So the notion of equality, in its proletarian as well as in its bourgeois form, is itself a historic product. Certain circumstances were required to produce it and these in their turn proceeded from a long anterior history. It is therefore anything but an eternal truth. And if the public regards it as self-evident in one sense or another if it, as Marx remarks "already occupies the position of a popular prejudice" it is not due to its being an axiomatic truth but to the universal broadening of conception in accordance with the spirit of the eighteenth century. If Herr Duehring then can set up his two famous men in housekeeping on the grounds of equality, it is apparent that the prejudices of the mass of men in its favor is an antecedent condition. In fact Herr Duehring calls his philosophy the "natural" because it proceeds from generally recognised things, which appear to him to be entirely natural. But why they seem to him to be natural he does not take the trouble to enquire. _Freedom and Necessity._ (The former part of this section is taken up with a criticism of Herr Duehring's knowledge of law of which he had boasted. It is a purely technical discussion and is of merely local interest. Having disposed of Duehring's juristic claims Engels proceeds to discuss "Freedom and Necessity" as follows.) One cannot deal properly with the question of morals and law without a discussion of free will, human responsibility, and the limits of necessity and freedom. The realistic philosophy has not only one but two solutions of these questions.