The Intellectual History Review published Gábor Gángó’s article on the the young Leibniz’s reception of Spinoza.

The article “Leibniz’s cooperation with Johann Christian von Boineburg: the case of Spinoza” presents a case study of the young Leibniz’s collaboration with Johann Christian von Boineburg in the domain of philosophy. Drawing on Boineburg’s correspondence and personal library, it reconstructs in detail their joint project – undertaken between October 1670 and mid-1672 – to refute Spinoza’s Tractatus theologico-politicus. By taking Boineburg’s scholarly initiatives into account, the study sheds light on Leibniz’s early engagement with Spinoza, revealing that Boineburg responded to the book with hostility, whereas Leibniz adopted a more measured and appreciative stance towards both the Tractatus and its author.

During the discussion, the study advances the state of research on several fronts. It argues that Leibniz’s Commentatiuncula de judice controversiarum predates the Tractatus, and consequently, contrary to previous assumptions, does not constitute a response to it. The study identifies two specific dates – 3 October 1670 and 4 October 1671 – on which Boineburg and Leibniz clarified the details of their opposition to Spinoza during personal meetings. It increases the number of marginal notes Leibniz inscribed in Boineburg’s copy of the Tractatus by three and offers a coherent interpretation of these annotations.

The study was made possible through the support of the project “History of Hungarian Philosophy in the Early Modernity” (NKIFIH K 137963, Principal Investigator Dr József Simon). The Open Access publication was facilitated by the University of Erfurt.