We present select examples of how visual phenomena can serve as tools to uncoverbrain mechanisms. Specifically, receptive field organization is proposed as a Gestalt-like neural mechanism of perceptual organization. Appropriate phenomena, such as brightness and orientation contrast, subjective contours, filling-in, and aperture-viewed motion, allow for a quantitative comparison between receptive fields and their psychophysical counterparts, perceptive fields. Phenomenology might thus be extended from the study of perceptual qualities to their transphenomenal substrates, including memory functions. In conclusion, classic issues of Gestalt (...) psychology can now be related to modern. (shrink)

There has been a great deal of talk recently among historians of Christian reflection about the problem and the possibility of a ‘plurality of theologies’. Directives from such eminent spokesmen as Karl Rahner have underscored the need for a rationale by which to demonstrate that the presence of different orientations does not necessarily violate the unitary character of a Christian tradition. Other Catholic thinkers have offered arguments for ascribing a relative status to the ‘Thomistic style’ of theology, and cases have (...) been made for the inclusion of additional schematic frameworks. Beyond all of this, there are elegant suggestions in the writings of Bernard Lonergan that there is sufficient theoretical, even metaphysical, basis to justify plurality in theology. The claim would seem to be that different theological orientations are expressive of distinct fields of vision which are not necessarily mutually exclusive. (shrink)

In his extensive work as a theologian and a historian, Walter H. Principe, CSB, (1922-1996) was committed to reflecting on both the present and the past. He was well-known as an historian of medieval theology and philosophy - especially through the work of Thomas Aquinas, as well as a contemporary theologian. This memorial collection addresses a fundamental feature of Principe's thought, namely his concern that the history of medieval theology and philosophy have a significant role to play in contemporary (...) discussions. Strengthening the ties between historical study and contemporary theological and philosophical thought, this book offers much to those who teach and research in historical theology and the history of philosophy. The ten essays provide significant test cases of how modern scholars may utilise the historical record judiciously for contemporary debates. Those who are concerned with intellectual history (both medieval and modern), the history of doctrines, and Thomism will also find this collection a useful contribution to modern scholarship. (shrink)

The author nationally recognized for the quality and depth of his teaching in religious studies has written the first full-scale introduction to the history and methods of the study of religion.

In a previous issue of this journal, Professor R. A. Oakes compared Blanshard’s version of the entailment view of causality with Professor E. H. Madden’s version of the natural necessity view of causality [5]. Professor Oakes, after considering their alleged differences, asserted that these two views were the same. In the same issue, Professor Madden replied to Oakes’ remarks with a list of characteristics which allegedly distinguished his natural necessity view from the entailment view [3]. In what follows I propose (...) that Madden’s list of differentiating characteristics contains no essential, irreconcilable element which separates his view from Blanshard’s. Additionally, I will consider several features of the Madden and Blanshard views not considered by either Madden or Oakes in their articles which do in fact irreconcilably distinguish them. (shrink)

This dissertation addresses a variety of foundational issues pertaining to the notion of algorithm employed in mathematics and computer science. In these settings, an algorithm is taken to be an effective mathematical procedure for solving a previously stated mathematical problem. Procedures of this sort comprise the notional subject matter of the subfield of computer science known as algorithmic analysis. In this context, algorithms are referred to via proper names of which computational properties are directly predicated )). Moreover, many formal results (...) are traditionally stated by explicitly quantifying over algorithms. These observations motivate the view that algorithms are themselves abstract mathematical objects -- a view I refer to as algorithmic realism. The status of this view is clearly related to that of Church's Thesis -- i.e. the claim that a function is computable by an algorithm just in case it is partial recursive. But whereas Church's Thesis is widely accepted on the basis of several well-known mathematical analyses of algorithmic computability, there is presently no consensus on how we can uniformly identify individual algorithms with mathematical objects. In the first chapter of this work, I attempt to illustrate the theoretical significance of algorithmic realism. I suggest that this view is not only of foundational significance to computer science, but also worth highlighting due to the role algorithms play in the fixation of mathematical knowledge and their relationship to intensional entities such as propositions and properties. Chapter Two presents a formal framework for reducing computational discourse to mathematical discourse modeled on contemporary discussion of mathematical nominalism. Chapter Three is centered on a case study intended to illustrate the technical exigencies involved with defending algorithmic realism. Chapter Four explores various ways in which algorithms might be identified with models of computation. And finally, Chapter Five argues that no such identification can uniformly satisfy all statements of algorithmic identity and non-identity affirmed by computational practice. I suggest that the technical crux of algorithmic realism lies in the necessity of reducing recursive specifications of algorithms to iterative models of computation in a manner which preserves algorithmic identity. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:AN IMPORTANT NEW STUDY OF THOMAS AQUINAS: JEAN-PIERRE TORRELL'S INITIATION A SAINT THOMAS D'AQUIN WALTER H. PRINCIPE, C.S.B. Pontifical Institute of Mediaeval Studies Toronto, Canada BEFORE BECOMING professor of theology at the Universite de Fribourg, Jean-Pierre Torrell, O.P., was a member of the Leonine Commission. This editorial experience, together with his continuing association with members of the commission, enables him in his new work, Initiation a saint Thomas (...) d'Aquin: Sa personne et son oeuvre, to clarify and frequently modify previous research conclusions about the life and work of Thomas Aquinas.1 Thus other recent studies in this area, e.g., those of James A. Weisheipl and Simon Tugwell, will have to be reassessed in the light of Torrell's findings in this important volume.2 Torrell, however, does more than examine the dates and places of Thomas's career and writing: as the book's subtitle and introduction make clear, his aim is to present the person of Thomas Aquinas in his context. This he does in a warm but measured fashion, situating Aquinas in his times, following Thomas's journeys about France and Italy on his intellectual apostolatea true ministry in the Dominican tradition-portraying him as 1 In the series Vestigia: Pensee antique et medievale 13 (Fribourg Suisse: Editions Universitaires; Paris: Cerf, 1993), pp. xviii, 592. 2 See Weisheipl, Friar Thomas d'Aquino: His Life, Thought, and Works, 2nd ed. (Washington, D.C.: Catholic University of America Press, 1983), and Tugwell, trans., ed., introd., Albert & Thomas: Selected Writings, The Classics of Western Spirituality (New York-Mahwah: Paulist Press, 1988), introd. [to Thomas Aquinas], pp. 201-351. 489 490 WALTER H. PRINCIPE, C.S.B. often nearly overwhelmed by the duties of this apostolate, yet vigorous and lively in defense of the faith and of the legitimate role of reason, a warm friend to many con,freres and others, a loyal and sometimes deeply involved member of his family. Torrell is especially adept at linking Thomas's apostolic activity with his profound and distinctive spirituality; this augurs well for Torrell 's promised companion volume, which will deal far more thoroughly with Thomas's spirituality than was possible within the editorial constraints of his earlier article in the Dictionnaire de spiritualite.3 New conclusions about the place and dating of Thomas's works Here, first, will be given a summary, with occasional comment, of this study's significant new conclusions about the place and dating of Thomas's works. Torrell accepts Weisheipl's view that Aquinas did his initial biblical commentary at Cologne before coming to Paris in 1252 and spent the years 1252-1256 working on the Scriptum super Sententiis. The "bref catalogue" at the end, prepared by G. Emery, O.P., states that this work is the "fruit of his teaching as bachelor of the Sentences at the begin;.. ning of his first stay in Paris ( 1252-54) ; its redaction had not yet been completed when he began his activity as Master ( 1256)" (485; emphasis mine). Weisheipl, with whom Torrell agrees as to Thomas's having done his cursory teaching of the Bible at Cologne, holds that Thomas lectured on the Senten:ces for the four years, 1252-1256 (71, 358); Tugwell seems to hold the same position when he speaks of Thomas "writing [his lectures on the Sentences] up for publication as he went" (211). Torrell's limitation of the teaching of the Sentences to 1252-1254 is based on the university statutes prescribing that this teaching be completed in two years (66), after which the candidate for the mastership would be a " formed bachelor " (baccalaureus formatus) whose main task would be to assist the master of 3 See his "Thomas d'Aquin," Dictionnaire de Spiritualite 15 (1991), cols. 718-73. INITIATION A SAINT THOMAS D1 AQUIN 491 theology with his disputed questions (58). This would mean that Thomas spent two whole years, 1254-1256, carrying out this rather minimal duty, redacting the Sentences (a task not completed until the beginning of his period as a master of theology), and composing two small works, the De ente et essentia and the De principiis naturae. Although the Scriptum is a... (shrink)