Nicholas Rescher

The book formulates an evolutionary approach to the theory of knowledge, based on the parallelism between the natural selection of our cognitive capacities and the rational selection of the methodological processes by which we put them to work. The former reflects the biological evolution of homo sapiens, the latter the cultural evolution of homo quaerens through the development of a scientific community of inquirers with its characteristic practices. This dual aspect of cognitive evolution indicates that our human cognitive accomplishments are limited by our particular evolutionary attunement to the world's scheme of things and are bound to reflect the character of our particular evolutionary niche. The resulting doctrinal position is one of a realistic relativism

This is a study of the logic of the concept of evidence. Two distinct concepts of evidence will be explicated and analyzed: confirming evidence by means of which an hypothesis is established, and supporting evidence which does not establish the hypothesis, but merely renders it more tenable. The formal characteristics of each of these concepts of evidence will be examined in detail in Part II. In Part III these considerations are used as a basis for a survey of rules of evidence in order to establish the systematic character of the evidential relationship from the standpoint of formal logic. Finally, the Conclusion appends a brief indication of the methodological bearing of the logical theory of evidence.

This is the third and final volume of A System of Pragmatic Idealism, a series that will synthesize the life's work of the philosopher Nicholas Rescher. Rescher's numerous books and articles, which address almost every major philosophical topic, reflect a unified approach: the combination of pragmatism and idealism characteristic of his thinking throughout his career. The three related but independently readable books of the series present Rescher's system as a whole. In combining leading ideas of European continental idealism and American pragmatism in a new way, Rescher has created an integrated philosophical position in which the central concepts of these two traditions become a coherent totality. The initial volume in the series was dedicated to epistemology, the philosophy of science, and the philosophy of nature, while the second dealt with issues of value theory, ethics, and practical philosophy. In Volume III Rescher examines the nature of philosophical inquiry itself, seeking to affirm the classical conception of philosophy as a significant problem-solving enterprise that draws on the whole range of human experience to attempt to resolve the "big questions." Originally published in 1994. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

The word apory stems from the Greek aporia, meaning impasse or perplexing difficulty. In _Aporetics,_ Nicholas Rescher defines an apory as a group of individually plausible but collectively incompatible theses. Rescher examines historic, formulaic, and systematic apories and couples these with aporetic theory from other authors to form this original and comprehensive survey. Citing thinkers from the pre-Socratics through Spinoza, Hegel, and Nicolai Hartmann, he builds a framework for coping with the complexities of divergent theses, and shows in detail how aporetic analysis can be applied to a variety of fields including philosophy, mathematics, linguistics, logic, and intellectual history. Rescher's in-depth examination reveals how aporetic inconsistency can be managed through a plausibility analysis that breaks the chain of inconsistency at its weakest link by deploying right-of-way precedence based on considerations of cognitive centrality. Thus while involvement with cognitive conflicts and inconsistencies are pervasive in human thought, aporetic analysis can provide an effective means of damage control.

PERHAPS THE MOST STRIKING FEATURE of professional philosophy in North America at this historic juncture is its scope and scale. The historian Bruce Kuklick entitled his informative study of academic philosophy in the United States, The Rise of American Philosophy: 1860-1930, even though his book dealt only with the Department of Philosophy of Harvard University. This institution's prominence on the American philosophical scene in the early years of the century was such that this parochial-seeming narrowing of focus to one single department--with its half-dozen or so philosophers--was not totally absurd for the period at issue. But today it would certainly be so. The American Philosophical Association, to which most United States academic practitioners of the discipline belong, presently has more than eight thousand members, and the comprehensive Directory of American Philosophers for 1992-1993 lists well over ten thousand philosophers affiliated to colleges and universities in the United States and Canada. Admittedly, this profession is small potatoes compared with other academic enterprises; the Scientific Research Society Sigma XI currently has a membership of more than one hundred thousand scientists, and the Modern Language Association has more than thirty-two thousand members. All the same, a small town of not inconsiderable size could be populated exclusively with contemporary North American academic philosophers. To be sure, its demographics would be rather unusual. Only just under twenty percent would be women; and blacks, Hispanics, and Asian-Americans would constitute just over one percent of the population. The social classes above and below the middle are underrepresented in this community, and a disproportionate fraction of its members comes from families of professional status. Moreover, for reasons that require a deeper sociological analysis than can be attempted here, the profession attracts a disproportionately larger fraction of Catholics, Jews, and immigrants.

In lieu of an abstract, here is a brief excerpt of the content:80 HISTORY OF PHILOSOPHY AVERROES' Quaesitum ON ASSERTORIC (ABSOLUTE) PROPOSITIONS UNTIL 1962 ONLY ONE logical work of Averroes existed in print in the original Arabic? At this late date, D. M. Dunlop published the Arabic text of the short tract by Averroes on the modality of propositions with which we shall be concerned here.' The text published by Professor Dunlop forms part of a collection of treatises by Averroes which has long been known to exist in the immensely valuable collection of Arabic manuscripts of the Escorial Library, near Madrid.' The collection is simply entitled Mas~'il (Questions),' faithfully reflected in the rubric of Quaesita under which several of these treatises are given in Latin versions in the sixteenth-century editions of.4ristotelis Opera cure.4verrois Commentariis. The particular treatise published by Prof. Dunlop deals with the problem of the relationship of assertoric propositions to the modalities of possibility and necessity. This treatise has been accessible for over four centuries in two printed Latin versions, made in Renaissance times from medieval Hebrew translations. The earlier of the Latin versions was made by a Jewish scholar, Ella del Medigo, for the Renaissance luminary Giovanni Pico della Mirandola, and was printed in the very rare Aldine incunabulum edition of the Quaesita Averrois in librum priorum (analytiorum Aristotelis) (Venice, 1497). A second Latin translation was made by Abraham de Balmes (d. 1523): and printed in several editions of the Juntine Latin Aristotle (Venice, from 1590): From these versions the main substance, at any rate, of Averroes' xMaurice Bouyges, ed., Averroes: Talkh~ Kitdb al-Maqouldt ("Middle Commentary on Aristotle 's Categoriae") Beyrouth, 1932 (-- Vol. IV of Bibliotheca Arabica-Scholasticorum, S6rie Arabe). sD. M. Dunlop, "Averroes (Ibn Rushd) on the Modality of Propositions," Islamic Studies (Journal of the Gentral Institute of Islamic Research, Karachi), Vol. I (1962), 23-34. sMichael Casiri, Bibliotheca Arabico-Hispana Escurialensis (2 vols., Madrid; 1760, 1770), No. 629; Hartwig Derenbourg, Les Manuscrits Arabcs de l'Escurial (3 vols., Paris; 1884, 1903, 1928), No. 632. ' Prof. Dunlop states that "another copy" of the Masa'il (presumably made from the Escorial MS?) exists in the Biblioteca Nacional in Madrid (No. 102 in the catalog of Robles). For information about this translator, see Bayle's Dictionary, art. "BALMIS, Abraham de," where note (B) describes some complaints about his translations from Hebrew to Latin. (I owe this reference to Prof. Richard Popkin.) Note (I) of Bayle's article on "AVERROES" gives some data concerning the Renaissance translations of Averroes, citing inter alia the opinion expressed by Keckermann in his PraecognitisLogicis (II, 2, nb. 32): "How much all Philosophy is indebted to Averroes, can then only be known, when God shall raise up a Genius, who will free our Latin Translations of him from the unintelligible Barbarisms everywhere to be met with, and render him in That Language, in a style, at least tolerable, and intelligible, for the Use of Students in Philosophy." eAristotelis Opera cure Averrois Commentariis, Vol. I. The edition of 1562 is now readily accessible in a photoreprinting made in Frankfurt am Main in 1962, and contains the "Averrois varii generis quaesita in libros logicae Aristotelis, Abramo de Balmes interprete," pp. 75 verso--- NOTES AND DISCUSSIONS 81 Quaesitum has been determinable.' The present, reasonably literal translation of the Arabic text should facilitate the work of anyone wishing to form his own judgment about the character of the Latin versions of Averroes' logical treatises, or at any rate the not insignificant number of them that came from the pen of Abraham de Balmes. The Latin version in the present instance is, on the whole, literal to the point of obscurity. It is punctuated by occasional strange, and sometimes ludicrous renderings--as, for example, at 27:6, where "not used in the art of rhetoric" becomes "non uterent agricolae"l Occasionally the Latin incorporates a marginal explanation within the text (e.g., at 29:10), and sometimes it omits phrases of the Arabic text. In general, it is significantly more difficult to derive from the Latin than from the Arabic an exact idea just what it is that Averroes had in mind. Unquestionably the most interesting aspect of Averroes' treatise is the light it sheds...

As Aristotle saw it, the modus operandi of nature is frequently irregular and unruly. And this accords with the structure of the universe, with regularity predominant in the trans-lunar realm and regularity prominent in the cis-lunar. This circumstance opens the way to the different sorts of natural laws: those which are strictly universal and those which function only normally and “for the most part.” And knowing to what extent exactness, regularity, and universality can be expected in different areas of inquiry was, for Aristotle, the very touchstone of scientific wisdom and sophistication.