The aim of this article is to clarify the critical role of Hegel's early logic, through an assessment of the dialectical process of sublation [Aufhebung] of the determinations of finite thinking at stake within its exposition. I want to show that the dialectical-critical work of logic has a speculative meaning for Hegel, thereby displaying the inward correspondence between critical and speculative aspects of philosophical activity. By pointing out the evidence from fragmentary texts on logic relating to Hegel's teaching activity in 1801–1802, I will first put into question the idea of an introductory role of logic. In so doing I challenge a widespread reading which argues for the presence of a sharp separation between critical logic and speculative metaphysics. I will then focus on the texts on logic in the 1804–1805 Reinschrift, reading them as the worksite wherein the dawning form of a full-fledged dialectical logic is first prepared and elaborated. More generally, if this paves the way for establishing a continuity between Hegel's early and mature logic and his concept of dialectic, it is also paramount for understanding how the activity of systematic philosophy in the mature version of the system essentially constitutes an ongoing work on the forms of the finite.