The immanent dialectic of the ancient Greek materialist philosopher, Epicurus (341-270 BCE), helped inspire Karl Marx, and formed the subject of his doctoral dissertation. Marx’s detailed study of Epicurus led him to develop his own materialist dialectic in distinction to the idealist philosophy of G.W.F. Hegel. Until now, however, there has been no full scholarly treatment of the relation of Epicurus to Marx, paying equal attention to both thinkers and examining the long-term impact of Epicureanism on Marxist thought. Breaking the Bonds of Fate: Epicurus and Marx fills this gap. Taking into consideration today’s revolution in the understanding of Epicurus—resulting from the recovery of fragments of his major work On Nature in the carbonized papyri that survived the burying in volcanic ash of the Roman town Herculaneum when Mt. Vesuvius erupted in 79 CE—it demonstrates that this new interpretation corresponds closely to Marx’s nineteenth-century treatment of Epicurus. The result is to fundamentally transform our contemporary understanding of both Epicurus and Marx.  The last (though logically the first) book to be written in a trilogy that also includes John Bellamy Foster’s Marx’s Ecology: Materialism and Nature (2000) and his The Return of Nature: Socialism and Ecology (2020), Breaking the Bonds of Fate: Epicurus and Marx provides a detailed historical and textual analysis grounding the argument of all three works. Not only does this clarify Marx’s relation to materialism and ecology, but also his analysis of the of freedom and necessity. Both Epicurus’ philosophy and that of Marx are given new meaning in our time, highlighting questions of substantive equality, dialectical naturalism, and sustainable community.