In lieu of an abstract, here is a brief excerpt of the content:Hume on Space (and Time) BEN MIJUSKOVIC HUME'S LABYRINTHINE ANALYSES of our ideas of space and time, textually occuring so early in the Treatise, 1clearly testify to his conviction of their central role in the physical sciences, then making such fantastic progress. Furthermore, quite early in the Treatise, Hume indicates his ambition to effect a revolution in the mental sciences comparable to the one Newton had achieved in the (...) physical disciplines, through the latter's conception of the force and effects of gravity. Accordingly, Hume regards the three principles or laws of the association of ideas as a "kind of ATTRACTION, which in the mental world will be found to have as extraordinary effects as in the natural" (T, 12-13). In pursuit of his investigations Hume commences, in the first part of the Treatise, by insisting on the principle that all our simple ideas are derived from simple impressions and that impressions always precede their correspondent ideas (T, 4, 7). This being firmly established, Hume nevertheless immediately proceeds in the very next part of the work to declare, paradoxically enough, that our ideas of space and time are complex ideas that lie beyond the nature of each and all of our simple impressions. Differently put, Hume is insisting that our ideas of space and time, unlike our idea of, say, a shade of blue, are not derived unproblematically from a precedent, simple mental impression (or physiological sensation, ~ la Locke). Thus, according to Hume, our idea of space is not sensationally given; it is not traceable to an antecedent extended impression as our idea of blue is derived from a precedent impression of blue. Hume's insistence that our conception of space is nonsensational has perplexed competent commentators on Hume. Consequently, even so able an interpreteter as Kemp Smith has been puzzled "why it was that [Hume] did not take the more easy line of allowing 'extensity' to the sensations of sight and touch. ''2 Or again, "How is it that [Hume] has not taken what would seem to be for him the easier and more obvious course, at least as regards space--the course usually taken by those who hold a sensationalist theory of knowledge--that extensity is a feature of certain of our sensations (those given through the senses of touch and sight), and in consequence sensibly imaged?" (PDH, 280). Of this simpler solution both Hobbes (Leviathan, Pt. I, 1; De Corpore, Pt. II, 7, 8) and Locke (Essay, II, 8) had availed themselves prior to Hume. Hence, Kemp Smith has found the section to be tough going indeed and has contented himself, to a great extent, in simply offering a number of historical appendices, suggesting lines of influence on Hume, through passages discovered in the works of Pierre Bayle, Nicholas de Malezieu, and Isaac Barrow. Now, without denying that Hume studied and was influenced in part by the ' A Treatise of Hurnan Nature, ed. L. A. Selby-Bigge (Oxford, 1888); hereafter cited as T. 2 The Philosophy of David Hume (New York, 1964), p. 277; hereafter cited as PDH. [3871 388 HISTORY OF PHILOSOPHY thinking of these authors (as well as by Francis Hutcheson), I wish to take up and develop in this paper a "historical" suggestion first offered by a student of Kemp Smith's, Charles Hendel; and I shall extend Hendel's point and try to argue a "theoretic" one, namely, that Hume's phenomenalism in the section devoted to space and time is derived from, and closely akin to, a form of Leibnizian idealism. In 1925, Hendel argued that Hume was directly influenced by the Leibniz-Clarke debate over the ontological and epistemological status of space and time; and he held that for Hume space and time, as appearances, were ultimately grounded in the associative power of the imagination.' Thirty years later, in a second edition, Hendel disavowed his earlier claim concerning the imagination and avoided discussion of his prior view that Hume was influenced by the Leibniz-Clarke correspondence (1963 edition, pp. 501, 503). In Hume's Philosophy of Human Nature, which first appeared in 1932 (reissued by Archon, 1967; see pp. 64-65, 67, 73, 77), John Laird also intimated that... (shrink)