"The efficient or motive principle, which is not merely the analysis but the production of the several elements of the universal, I call dialectic. Dialectic is not that process in which an object or proposition, presented, to feeling or the direct consciousness, is analysed, entangled, taken hither and thither, until at last its contrary is derived. Such a merely negative method appears frequently in Plato. It may fix the opposite of any notion, or reveal the contradiction contained in it, as did the ancient scepticism, or it may in a feeble way consider an approximation to truth, or modern half-and-half attainment of it, as its goal. But the higher dialectic of the conception does not merely apprehend any phase as a limit and opposite, but produces out of this negative a positive content and result. Only by such a course is there development and inherent progress. Hence this dialectic is not the external agency of subjective thinking, but the private soul of the content, which unfolds its branches and fruit organically. Thought regards this development of the idea and of the peculiar activity of the reason of the idea as only subjective, but is on its side unable to make any addition. To consider anything rationally is not to bring reason to it from the outside, and work it up in this way, but to count it as itself reasonable. Here it is spirit in its freedom, the summit of selfconscious reason, which gives itself actuality, and produces itself as the existing world. The business of science is simply to bring the specific work of the reason, which is in the thing, to consciousness."
- Georg Wilhelm Friedrich Hegel (1770 - 1831)
Science of Logic