Johann Gottlieb Fichte's Wissenscbaftslebre arises out of a particularly stormy period in the philosopher's personal, academic, and intellectual life. The work he produced is many things at once: an epistemology or theory of knowledge, a philosophical anthropology, an ethics or metaethics, the foundation for a political theory (Rousseau), the basis for an aesthetic program (Romanticism), perhaps even a philosophy of nature. Seidel presents the English and German text of part 1 of the Wissenscbaftsiebre, followed by a commentary on the text. The work concludes with a summary of parts 2 and 3 of the Wissenscbafislebre. An annotated bibliography surveys the important literature on the philosopher.