 Stirner’s work also had a significant impact on a then little-known contemporary associate of these left-Hegelians, one Karl Marx. (Stirner mentions Marx indirectly, in a footnote which treats him as something like a radical Feuerbachian.) Between 1845 and 1846, Marx collaborated with Friedrich Engels (1820–1895) on a group of manuscripts now usually called The German Ideology, which included a fierce and sustained attack on their erstwhile philosophical contemporaries. Most of these texts were not published at the time, and it was 1932 before this critical engagement with the work of Bauer, Feuerbach, and Stirner, appeared fully in print. The account of Stirner contained in the so-called The German Ideology takes up over three hundred pages of the published text — abridged editions often omit much of this dense but fascinating material — and, although Marx is remorselessly critical of Stirner’s position, it scarcely follows that The Ego and Its Own was without influence on the former’s ideas. Not least, Stirner’s book appears to have been decisive: in motivating Marx’s break with the work of Feuerbach (whose considerable influence on many of Marx’s earlier writings is readily apparent); in making Marx reconsider the role that concepts of human nature should play in social criticism; and in forcing him to think more clearly about how far communism should be, in some sense, individualistic.