It is the negative, that which constitutes the quality of both the dialectical reason and the understanding: it negates the simple, thereby posits the determinate difference of the understanding; but it equally dissolves this difference, and so it is dialectical. But spirit does not stay at the nothing of this result but is in it rather equally positive, and thereby restores the first simplicity, but as universal, such as it is concrete in itself; a given particular is not subsumed under this universal but, on the contrary, it has already been determined together with the determining of the difference and the dissolution of this determining. This spiritual movement, which in its simplicity gives itself its determinateness, and in this determinateness gives itself its self-equality – this movement, which is thus the immanent development of the concept, is the absolute method of the concept, the absolute method of cognition and at the same time the immanent soul of the content. – On this self-constructing path alone, I say, is philosophy capable of being objective, demonstrative science. – In this fashion have I tried to portray consciousness in the Phenomenology of Spirit.
G.W.F.Hegel 1812 Science of Logic, Preface to the first edition