than Joseph Dietzgen, however. Note the following observation on logic by Joseph Dietzgen: The red thread winding through all these letters deals with the following points: The instrument of thought is a thing like all other common things, a part or attribute of the universe. It belongs particularly to the general category of being and is an apparatus which produces a detailed picture of human experience by categorical classification or distinction. In order to use this apparatus [Pg 255]correctly, one must fully grasp the fact that the world unit is multiform and that all multiformity is a unit. It is the solution of the riddle of the ancient Eleatic philosophy: How can the one be contained in the many, and the many in one? This explicit evocation of the Eleatics (Parmenides, Zeno of Elea and Melissus of Samos) does in fact seem to set Dietzgen apart from the mainstream of dialectical materialism that emerged from the works of Marx and Engels. It also seems to collide with current ideas about the "multiverse" common in scientific cosmology. One of the more obvious problems of writing about a dialectical materialist philosopher like Dietzgen is the sheer lack of mainstream citations and reviews as third-party sources, which at least to an extent is due to political antagonism in the academy and, one might suppose, the lack of commercial pressure. Death Dietzgen died at home smoking a cigar. He had taken a stroll in Lincoln Park, and was having a political discussion in a "vivacious and excited" manner about the "imminent collapse of capitalist production". He stopped in mid-sentence with his hand in the air – dead of paralysis of the heart. He is currently buried at the Waldheim Cemetery (now Forest Home Cemetery), in Forest Park, Chicago, a few feet away from the Haymarket Martyrs. Major works Das Wesen der menschlichen Kopfarbeit, 1869, engl "The Nature of Human Brainwork", "The Religion of Social Democracy" (in six sermons from 1870 to 1875). "Scientific Socialism" (1873). "The Ethics of Social Democracy" (1875). "Social Democratic Philosophy" (1876). "The Inconceivable: a Special Chapter in Social-Democratic Philosophy" (1877). "The Limits of Cognition" (1877). "Our Professors on the Limits of Cognition" (1878). "Letters on Logic" (addressed to Eugen Dietzgen) (1880–1884). "Excursions of a Socialist into the Domain of Epistemology" (1886). "The Positive Outcome of Philosophy" (1887). More recent editions: Nature of Human Brain Work: An Introduction to Dialectics, Left