Abstract
This book is the best and most comprehensive treatment we have of Leibniz' study of natural languages, on the same high level of scholarship, knowledge, and insight as the essay Sigrid von der Schulenburg published in 1937. With its rich detail and source references, it is indispensable both to Leibniz scholars and to students of the history of the study of language. The editor's careful indices make it possible to use the book also as a work of reference. The reviewer shows that the chief impulse to Leibniz' study of languages was the need to disprove the Swedish thesis of the northern origin of the Germanic languages.