The correspondence in this issue of History of European Ideas has not previously been published. It is the surviving part of the epistolary exchange between Dugald Stewart and the Genevan professor and man of letters Pierre Prevost (1751–1839) from the 1790s to the 1820s. To this are added several closely connected letters to and from their associates. This correspondence is striking evidence of the republic of letters continuing to flourish in the aftermath of the French Revolution, illustrating the transmission of works, the role of go-betweens, the provision of letters of introduction and the formation of intellectual and personal alliances. Not least, the letters tell us much about the ideas of those involved, and about the formation, development, and relation of these ideas to published works. This is particularly significant for Stewart, most of whose letters and papers are lost.