This Triplicity runs through Hegel's works. If you open one, the main divisions are marked with the capitals A, B, C. One of these, it may be, is broken up into chapters headed by the Roman numerals I, II, III. Under one or more of these probably come severally the Arabic numerals 1, 2, 3. Any one of these again may be subdivided, and gives rise to sections, headed by the small letters a, b, c. And, lastly, any one of these may be treated to a distribution under the three titles α, β, γ. Of course the division is not in each case carried equally far: nor does the subject always permit it: nor is Hegel's knowledge alike vigorous, or his interest in all directions the same. [Footnote 1: 'Verstand,'] [Footnote 2: 'Die Vernunft ohne Verstand ist Nichts; der Verstand doch Etwas ohne Vernunft.' Hegel's _Leben_, p. 546.] [Footnote 3: Ὃτι οὐ κεχώρισται ἀλλήλων τὰ ἐv τῷ ἑvi κόσμῳ ἀὐδὲ ἀποκέκοπται πελέκεϊ. Simplic. Phys. fol. 38 a (ed. Diels, p. 176).] [Footnote 4: 'Vernunft.'] [Footnote 5: _Novum Organum_, Book I. 70.] [Footnote 6: _Phenomenologie des Geistes_, p. 67.] [Footnote 7: Plato, _Symposion,_ 203.] [Footnote 8: Cf. Dante, _Parad._ iv. 130.] [Footnote 9: See in the _Logic_ (vol. ii. p. 145).] PROLEGOMENA BOOK III _LOGICAL OUTLINES_ CHAPTER XXVI. THOUGHT PURE AND ENTIRE. The English reader may probably be taken to be familiar with the conception of Logic as the Science of the _Form_ of Thought. He may also have heard this explained as equivalent to the Science of Thought as Thought, or of Thought as Form, or of Formal Thought. But, probably, also, he brings to the lesson no very high estimate of _form_ as such. In the old language of Greek philosophy, transmitted through the Schoolmen of the West, and still lingering in the phraseology of Bacon and Shakespeare[1], Forms and substantial forms were powers in the world of reality. But a generation arose which knew them not: to which they were only belated survivals of the past. The forms had lost connexion with matter and content, and had come to seem something occult, transcendent, and therefore, to a practical and realistic age, something fantastic and superfluous. Yet it may be well to recall that the same author who has put on record his view that forms are only mental figments, unless they be fully 'determinate in matter,' has equally laid it down that the so-called 'causes' of vulgar philosophy--the matter and the agent--are only 'vehicles of the form,' Thus spontaneously did Bacon reconstruct the Aristotelian theory of the interdependence of form and matter, that form is always form _of_ (or _in_) matter, and that matter is always _for_ form.