Critical edition of Schleiermacher's Vorlesungen über die Dialektik in two volumes: The first volume (10/1) presents a historical introduction, an editorial report and Schleiermacher's manuscripts (1811–1833); the second volume (10/2) contains selected transcripts of the lectures 1811, 1818/19, and 1822 together with an appendix with special notes, bibliography, and an index. This is the first ever publication of the complete transcripts of his lectures from 1811 and 1818/19, presented here in a critical edition. The recently discovered (anonymous) transcript of the lecture from 1818/19 deserves special attention because of its precise and complete account of the lecture. With the publication of these volumes, researchers now have access to a complete historical critical edition of the Dialektik, broadening at the same time the text base and complementing previous editions.