A lesser-known work from the canon of a well-known thinker, Thomas Hobbes's Historia ecclesiastica was published in 1688 in London – just over a decade after its author's death. The text is a work of great learning, detailing Hobbes's conception of church history and providing further evidence of his erastianism, theological radicalism, animosity towards priestcraft and belief that Christianity had been corrupted by Greek philosophy, including Platonism. This new edition of Hobbes's text – a 2,242-line Latin dialogue set in poetry – is based on a collation of the first printed edition with three extant manuscript versions. The original Latin and the English translation appear on facing pages, with a critical apparatus beneath the Latin and a detailed commentary below the English. But this work is much more than a translation with notes, for it includes a substantial seven-chapter introductory section written by Springborg and amounting to a third of the 732-page edition. These chapters set the Historia ecclesiastica in its theological, political and philosophical contexts, and relate the text to the rest of its author's œuvre. The work also includes three appendices, a glossary, a bibliography and an index of proper names. This new edition is a monument of scholarship involving the collective effort of several specialists directed by Springborg over a fifteen-year period. Overlooked to an even greater extent than the theological portion of the Leviathan (relatively neglected until recently), this first English translation of Historia ecclesiastica will surely serve to remedy this lamentable neglect and help restore balance to Hobbes scholarship.