"The whole exercise of reason": Charles Mein's Account of Rationality

L'Auteur de cet Ouvrage nous paroit meriter un rang distingué parmi les Auteurs Metaphysiques. Il seroit seulement à souhaiter qu'il eût traité ses matiéres avec un peu plus de Methode. Ce n'est pas qu'il ne soit très-intelligible, & que son Stile même ne soit assez pur, mais un Auteur devroit se souvenir que ceux qui liront son ouvrage ne suivront pas ses pensées comme il les suit, & qu'on ne se rapellera pas ce qu'il a dit aussi facilement qu'il se le rapelle lui-même.... Il nous paroit que si l'Auteur veut encore s'exercer sur pareilles matieres il ne fera pas mal de repasser sur ce qui'il vient de publier, de donner des definitions plus intelligibles, & d'éclaircir le reste avec plus d'exactitude.

— Bibliothèque raisonnée, June 1729

Two Dissertations concerning Sense, and the Imagination. With an Essay on Consciousness appeared anonymously in mid-summer 1728 over the prestigious imprint of Tonson in the Strand. ¹ The "Essay on Consciousness" explicates the nature and functions of consciousness. The two dissertations modestly prepare for an inquiry into human understanding, which

is at present very much wanted; and towards which the removal of those Prejudices arising from Sense, and the Imagination, which hinder Men from discovering the Truth, or discerning it, tho' fairly offered to them, is the first Step to be made; and may be of some use to any one who shall hereafter undertake to explain and set forth, in a clear and perspicuous Light, the native and genuine Operations of the Understanding, as they are in Themselves, without mixing or confounding them with any Others. (1-2)

A Bibliothèque raisonnée review twice noted the book's diffusion and inconvenient organization. ² The book is nonetheless interesting for its clear defense of the cognitive superiority of reason over sense and imagination, its attack on contemporary conflations of human and brutal natures, and its treatment of consciousness, dreams, madness, and the self. In its assay of human understanding Two Dissertations implements Peripatetic, Cartesian, and even Lockean principles. The last notwithstanding, the work is an assault on the Lockean reduction of understanding to passive perception and on Locke's conception of knowledge as the perception of ideas and their relations. It is also an attempt to resuscitate reason in the teeth of nominalist accounts of rationality such as those of John Toland and allied freethinkers. ³ In pursuing these goals, it offers variations on traditional concepts of cognition, such as a conception of notions as acts of intellectual apprehension which an interpreting mind brings to bear on sensory appearances. This understanding of notions as acts falls within the British notional way marked by Digby, White, Sergeant, and especially Burthogge, antedating publication of George Berkeley's explicit distinction between passive ideas and notions owing to reflection. ⁴ Notions play an important role in Two Dissertations, contrasting the mind's active, rational contribution to knowledge with Lockean ideas. Yet the work's treatment of notions contains intimations of a more elaborate conception of rationality that includes a distinct order of reflective notions not deployed in this book (25-26).

Clearly identifying the purposes, doctrine, and authorship of Two Dissertations is worthwhile insofar as its detailed analysis of consciousness is intrinsically interesting and quite possibly historically important, despite its neglect in the past century. For its "Essay on Consciousness" purports to be the "first Attempt that hath been made on the Subject" (sig. A3^r ; cf. 141-42). While conventional interpretations of modern philosophy may have habituated us to be skeptical of such a claim made as late as 1728, it is by no means outlandish, subject to textual and conceptual qualification. This paper concerns primarily just one function of the conscious mind addressed in Two Dissertations: the concept of...