Science of Logic, first published between 1812 and 1816, is the work in which Georg Wilhelm Friedrich Hegel outlined his vision of logic. It is Hegel’s second major work, and a notoriously difficult book. His prose is dense, and his subject matter is onerous. At the same time, Hegel understands his project in the Logic to be a significant one. Tracing the development of a series of concepts out of “thinking” itself, the Logic is supposed to provide the core of ontology and, in some sense, to mark a renewal of metaphysics after Kant.
For Hegel, the most important achievement of German Idealism, starting with Immanuel Kant and culminating in his own philosophy, was the argument that reality (being) is shaped through and through by thought and is, in a strong sense, identical to thought. For Hegel the underlying structure of all of reality is ultimately rational, logic is not merely about reasoning or argument but rather is also the rational, structural core of all of reality and every dimension of it.
Hegel’s Science of Logic includes among other things analyses of being, nothingness, becoming, existence, reality, essence, reflection, concept, and method. He considered it one of his major works and therefore kept it up to date through revision. Science of Logic is sometimes referred to as the Greater Logic to distinguish it from the Lesser Logic, the moniker given to the condensed version Hegel presented as the “Logic” section of his Encyclopedia of the Philosophical Sciences.
Simon Gros 
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