This volume presents the remaining texts of 1812. The lecture course Vom Verhältniß der Logik zur wirklichen Philosophie delivered in the summer semester of 1812 is accessible to research for the first time. It analyzes empirical understanding and demonstrates the contradictory conception of thought in formal and transcendental logic, arguing that the formal-logical view of thought is untenable. This view of cognition is completed in the winter semester of 1812/13 in the earlier known work on transcendental logic, Vom Unterschiede zwischen der Logik und der Philosophie selbst. This text passes from an understanding of the concept and the intuition up to the deduction of space. This work counts as one of the major philosophical writings of Fichtes late period and is published here in a significantly improved form. The introductory lecture On the Study of Philosophy in General (WS 1812/13) not only sets out the conditions for understanding the Wissenschaftslehre but also Fichtes procedure in the various versions of his Transcendental Logic. The volume is supplemented by two smaller texts whose dating is uncertain, Zur Herstellung eines verlohren gegangenen Mskpts. and 2. noch Auszug.