By providing an authoritative new edition of one of the original sources of modern linguistics, the volume makes a hugely useful resource for the investigation of the early beginnings of Indo-European scholarship . Together with Markey’s 1976 edition of Dasent’s 1843 translation of Rask’s other important work on Icelandic, “A Grammar of the Icelandic or Old Norse Tongue”, it also significantly complements our understanding of the contribution given by the Danish scholar to the development of the comparative historical study of Indo-European languages. Gregersen’s excellent and clear introduction, Niels Ege’s notes on the original Danish text and the rich body of sources and materials presented will make the volume an illuminating resource for both specialists and students in the field of language sciences.

- Angela Andreani, on Linguist List 25.529, 1 February 2014,

En dépit de son âge et de ses limites, l’ouvrage mérite encore d’être lu aujourd’hui : on y trouvera une linguistique jeune, libre de toute entrave et qui découvre tout à la fois les données et les méthodes pour les traiter.

- Daniel Petit, in Société de Linguistique de Paris, Volume 110/2, 2015,