“...[G]reat progress was evident in the last Congress of the American 'Labour Union' in that among other things, it treated working women with complete equality. While in this respect the English, and still more the gallant French, are burdened with a spirit of narrow-mindedness. Anybody who knows anything of history knows that great social changes are impossible without the feminine ferment. Social progress can be measured exactly by the social position of the fair sex (the ugly ones included).”

“The present struggle between the South and North is, therefore, nothing but a struggle between two social systems, the system of slavery and the system of free labour. The struggle has broken out because the two systems can no longer live peacefully side by side on the North American continent. It can only be ended by the victory of one system or the other.”

“The very same bourgeois mentality which extols the manufacturing division of labour, the life-long annexation of the worker to a partial operation, and the unconditional subordination of the detail worker to capital, extols them as an organisation of labour which increases productivity - denounces just as loudly every kind of deliberate social control and regulation of the social process of production, denounces it as an invasion of the inviolable property rights, liberty and self-determining genius of the individual capitalist. It is characteristic that the inspired apologists of the factory system can find nothing worse to say of any proposal for the general organisation of social labour, than that it would transform the whole of society into a factory.”

“The bourgeois period of history has to create the material basis of the new world — on the one hand universal intercourse founded upon the mutual dependency of mankind, and the means of that intercourse; on the other hand the development of the productive powers of man and the transformation of material production into a scientific domination of natural agencies. Bourgeois industry and commerce create these material conditions of a new world in the same way as geological revolutions have created the surface of the earth. When a great social revolution shall have mastered the results of the bourgeois epoch, the market of the world and the modern powers of production, and subjected them to the common control of the most advanced peoples, then only will human progress cease to resemble that hideous, pagan idol, who would not drink the nectar but from the skulls of the slain.”

“In the social production of their existence, men inevitably enter into definite relations, which are independent of their will, namely relations of production appropriate to a given stage in the development of their material forces of production. The totality of these relations of production constitutes the economic structure of society, the real foundation, on which arises a legal and political superstructure and to which correspond definite forms of social consciousness. The mode of production of material life conditions the general process of social, political and intellectual life. It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness. At a certain stage of development, the material productive forces of society come into conflict with the existing relations of production or – this merely expresses the same thing in legal terms – with the property relations within the framework of which they have operated hitherto. From forms of development of the productive forces these relations turn into their fetters. Then begins an era of social revolution. The changes in the economic foundation lead sooner or later to the transformation of the whole immense superstructure.”

“It is not the consciousness of men that determines their being, but, on the contrary, their social being that determines their consciousness.”

“In its rational form [dialectic] is a scandal and abomination to bourgeoisdom and its doctrinaire professors, because it includes in its comprehension and affirmative recognition of the existing state of things, at the same time also, the recognition of the negation of that state, of its inevitable breaking up; because it regards every historically developed social form as in fluid movement, and therefore takes into account its transient nature not less than its momentary existence because it lets nothing impose upon it, and is in its essence critical and revolutionary.”