I Want to examine how far the question ‘What is it for a man to act morally?’ can be answered in terms of the sociological concept of a role. Is, for example, acting as a moral agent consistent with acting in the capacity of one's role, or even identical with it if being a moral agent is acting a role? In the first part of my paper I shall examine some of the relations between morality and roles, especially from the (...) point of view of that freedom which is always regarded as a necessary condition of a man's being a moral agent. In the second part I shall examine the concept of a role itself, not from the point of view of sociology to which it notionally belongs, but from the point of view of the philosophy of mind; this is the point of connection between my own theme and the general theme of this series of lectures. The role concept will thus be a bridging concept between ethics and the philosphy of mind. Finally I shall bring to bear on the idea of the moral agent any insights that may be yielded by the psychology of role-acting. (shrink)

I Want to examine how far the question ‘What is it for a man to act morally?’ can be answered in terms of the sociological concept of a role. Is, for example, acting as a moral agent consistent with acting in the capacity of one's role, or even identical with it if being a moral agent is acting a role? In the first part of my paper I shall examine some of the relations between morality and roles, especially from the (...) point of view of that freedom which is always regarded as a necessary condition of a man's being a moral agent. In the second part I shall examine the concept of a role itself, not from the point of view of sociology to which it notionally belongs, but from the point of view of the philosophy of mind; this is the point of connection between my own theme and the general theme of this series of lectures. The role concept will thus be a bridging concept between ethics and the philosphy of mind. Finally I shall bring to bear on the idea of the moral agent any insights that may be yielded by the psychology of role-acting. (shrink)

Darwin's theory of evolution brought to an end the static view of nature. It was no longer possible to think of species as immortal, with secure places in nature. Fluctuation of population could no longer be thought of as occurring within definite limits which had been set at the time of creation. Nor was it any longer possible to generalize from the differential reproductive potentials, or from a few cases of mutualism between species, that everything in nature was “fitted to (...) produce general ends, and reciprocal uses.” 134 The appeal to “design” could no longer be substituted for answers to questions concerning animal demography. Instead, the dynamics of a population had to be viewed as the outcome of species' struggle against animate and inanimate factors in the environment. Both the members of a species and the environmental factors tend to vary randomly, and therefore neither evolution nor population dynamics could be fully understood alone. For this reason Darwin's linking of the two subjects was inevitable and not merely an historical accident. Since Darwin had shown that no automatic equilibrium existed, he demonstrated the importance of closer study of the causes of population dynamics and extinction. He also indicated that an understanding of population depends upon the development of a broad knowledge in ecology.Viewed from another direction, Darwin's work ended the early modern era of population studies by clarifying three interrelated problems which were important for understanding population: extinction, distribution, and the nature of species. The components of his answer had been discussed in the eighteenth century, but there had not existed enough evidence for the completion of the revolution in thought which had then begun. At the beginning of the nineteenth century, Playfair found the evidence for extinction conclusive, and, in spite of Lamarck, Curvier convinced the scientific world that there could no longer be any doubt about it. This was a step the importance of which, with his limited knowledge of biogeography and population, Cuvier could not have fully realized. Lamarck attempted, with his evolutionary theory, to circumvent the necessity for admitting extinction, but he overestimated the adaptability of organisms and in doing so he underestimated the importance of competition and the whole field of ecology. On the other hand, he was not willing to let questions such as the origin of species remain taboo to science. The origin of species was a biogeographical as well as a paleontological question. Humboldt correlated environment with the distribution of species and conveyed the impression that plant communities are subject to change. De Candolle, following the lead of Linnaeus and Humboldt, emphasized the ecological aspects of biogeography, not only the importance of habitat and range, clearly showing the ecological effects of competition. The entomologists Kirby and Spence took a faltering step toward understanding the relationship between population and ecological role, but they fell short of any significant new conclusions. Neither they nor Swainson could fully comprehend the new perspective of De Candolle.Lyell was able to bring together the evidence from these three lines of investigation and weave them into an important synthesis that almost accomplished that Darwin later did. Although opposing Lamarck's theory of evolution, Lyell had a dynamic view of ecology. He realized that population dynamics offered an important key to the understanding of biogeography. Since he knew that species become extinct, he investigated closely the factors which could either preserve or extinguish species. While explaining these factors, he described the interrelationships of species in greater detail than had ever been done before. Forbes continued to develop Lyell's ecological concepts, and his first-hand field experience enabled him to describe biotic communities more concretely than Lyell had.Having the advantages of Lyell's understanding and his own experience from a global voyage, Darwin could take the final step from the static to the dynamic concept of life. He had seen populations fluctuating and also fossil species in South America, and on the Galapagos Islands he had encountered a biogeographical problem that could not be credibly solved without the idea of evolution. However, the bare idea of evolution did not fully answer his questions. He sought physiological causes of extinction before he read Malthus and realized that De Candolle and Lyell had correctly emphasized the importance of competition. Darwin found that, in order to understand evolution, he needed to improve his understanding of ecology. He wanted to know when populations were most easily decimated, how extensive were competition and cooperation, what effects parasites have upon populations, and what changes occur in biotic communities when a species is either added or subtracted. He contributed to some extent to answering these questions. Though there remained much for others to do, there was now a new and more secure theoretical framework within which later studies could be interpreted. As Ernst Mayr has observed, Darwin's “consistent thinking in terms of population has had an impact on biological theory and practice which is second only to his sponsorship of natural selection as the mechanism of evolution.” 135. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Plato's Doctrine of the Psyche as a Self-Moving Motion RAPHAEL DEMOS I WILLXSXTHEREADERto ignore for the time being what he has gleaned about the soul from the reading of the Phaedo and the Republic. In these dialogues Plato speaks of the soul sometimes as wholly rational, as having three parts, and so forth. But in these dialogues he is t~lklng of the human soul, which is a special case, (...) whereas in this essay I am de~Hng with the wider role and the concept of the soul as the efficient cause of motion, change, and all becoming everywhere in the cosmos. My cardinal texts in this exposition are the Sophist (246a-249d), the Phaedrus (245c, d), and a considerable portion of Laws, X. Consider the Phaedo, a dialogue with at least four motifs: it is a dramatic evocation of the last day in the life of Socrates, it is an argument for the immortality of the soul and for the reality of the world of ideas, it is a myth of the nether world, and finally, it is a theory of the cosmos as ruled by purpose--all in all, one of the great pieces of literature of the Western world. For the reader, it is an evocation of an attitude to life, based on Plato's conception of the soul--an attitude expressed in the famous phrase that the wise man spends his life meditating on death. As contrasted with what may be called his existential concern with the soul, in the other dialogues on which I will comment, Plato approaches the topic of the soul as part of his explanation of the cosmos. In these his attitude is objective and quasi-scientific. It is to this side of Plato's thought that I wish to call attention in this essay, where the establishment of the immortality of the soul is incidental to the more basic doctrine that the soul is an arche, a primary factor and an ontological principle. In the,Sophist, we find Plato playing the music of his philosophy in a new key. He refers to the "friends of the forms" as though he, himself, were an outsider looking in; then, too, he asserts that motion is really real in contrast to his derogatory references to motion in the Cratylus, the Phaedo, and the Republic.I In these (and other) dialogues, Plato contrasts change and changing things with the timeless forms in respect of reality: the former are said, at best, to be semi-real; only the latter are really real. But in the Sophist he changes his tune, arguing that total reality (~o ~v, to' ~a~rE~ By) includes both motion and rest (248e 8; 249d 3-4). What does he mean by these two words? That by 'rest' he means the realm of ideas is indicated (if not proved) by his references to the forms in the same context (247b 1But in the Theaeteius,he classifiesmotions in a semi-scientific fashion, leaving the impression on the reader that he regards motion as a reality. [133] 134 HISTORY OF PHILOSOPHY 1-2; 249b, 10, c 1).2 As for motion, Plato makes it clear that the term covers not only (a) physical motion but also (b) life, (c) psyche, and (d) phronesis or naus (249b 5). All these are said to be forms of kinesis; how this is so--how life, soul, mason may be described as motions or changes--is a matter for later comment. What is more to the point is Plato's insistence that motion and what is moved are onta (beings, 249b 2, d 3). Plato uses change (metabol$) interchangeably with kinesis; anticipating the Phaedrus, I will include activity under change. And anticipating the Laws, I will characterize some of this activity as mental; indeed the Sophist, includes within change nous, phronesis, and episteme; that is to say, understanding (in the sense of an activity, 249a, b, c).s Plato offers various reasons in support of his contention that change is real. He may also be offering a special demonstration as follows. The philosopher who denies that change is real is engaged in a mental activity, in short... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:A Tenth-Century Arabic Interpretation of Plato's Cosmology MAJID FAKIIRY OF PLATO'STHIRTY-SIXDIALOG~Y~Sonly the Timaeus is devoted entirely to cosmological questions. The influence of this dialogue on the development of cosmological ideas in antiquity and the Middle Ages was very great. At a time when the knowledge of Greek philosophy and science in Western Europe had almost vanished, the Timaeus was the only Greek cosmological work to circulate freely in learned (...) circles. The translation and commentary of Chalcidius (c. 350) made the Timaeus available to Latin scholars, at least up to c. 53. But interest in the Timae~s was sustained for a long time before that. The lost commentary of Posidonius of Apamea (d. 51 B.C.), the De animae procreatione in Timeo of Plutarch (d. A.D. 125), the commentary of Proclus (d. 485), extant up to 44d,1 are the most important links in this continuous chain of Platonic cosmological exegesis in antiquity. In the Arabic tradition, the Timaeus had a decisive impact on the development of cosmological ideas also. Plutarch and Proclus were familiar names in the history of Platonic and post-Platonic thought, but I am not aware that the Stoic Posidonius, whom Zeller has described as ".the most universal mind that Greece had seen since the time of Aristotle," 2 was known to the Arabs, or that any mention of his commentary on the Timaeus is to be found in the Arabic sources. General interest in Platonism was an early feature of the philosophical wave which swept the Islamic learned world in the 8th century, and Zeller may be right in saying that it was the Platonic School of Athens which gave Muslim Neoplatonism its peculiar stamp. 3 One of the earliest translators of philosophical texts into Arabic, Yah.ia (b. al-Bit.riq) who flourished in the 2rid half of the 8th century, is credited with the translation of the Timaeus, later retranslated or revised by Hunain (b. Ish~q; d. 873) and Yahia (b. 'Adi and not, as Sarton has it, b. 'Ali; d. 974).~ In addition, the following Platonic dialogues appear to have been translated into Arabic: The Sophistes, the Parmenides, the Cratylus, the Euthydemus, the Republic, the Statesman, the Laws and the Crito. The determination of the actual translator of each work poses serious difficulties. In an autobiographical tract, Hunain simply reports that either he or his disciple Is~ (b. Yahia) translated these works for his patron Muhammad (b. Cf. A. E. Taylor, A Commentary on Plata's Timaeu~ (Oxford, 1928),pp. 34f., and George Sarton, History o] Science (Cambridge, Mass., 1959),I, 428f. Cf. E. Zeller,OutEnesof the History oSGreek Philosophy (N.Y., 1955),p. 268. sIbid., p. 329. ' Cf. al-Fihrist (Cairo, N~D.),p. 358. [15] 16 HISTORY OF PHILOSOPHY Musa), the astrologer.~ Other writers corroborate or supplement this account. Thus Ibn al-Nadim (d. 997), ascribes to Hunain the interpretation (tarsi'r) of the Republic, to him and to Ibn 'Adi the translation of the Laws, and to his son Ish.iq the translation of the Sophistes, together with the commentary of Olympiodorus2 The Crito appears to have been translated also by Yahia (b. Adi), and extensive excerpts from it and the Phaedo are often quoted in the Arabic sources in connection with the trial and execution of Socrates. Another difficulty is raised by the fact that none of the Arabic versions of these dialogues which have come down to us, either as separate works or parts of general commentaries such as the Laws, the Timaeus and the Republic, are complete, so that the inference is inescapable that, as borne out by Hunain's own testimony, it was Galen's paraphrases or compendia of these works, or at any rate those which were translated into Arabic within the School of Hunain, that are actually referred to in our sources.7 It is not, however, with the general diffusion of Platonism in the Muslim world that I am primarily concerned here, but rather with the impact of Platonic cosmological theory as illustrated in the writings of Abu Bakr Muhammad (b. Zakariya al-Razi; d., c. 932), the Rhases of Latin authors, the greatest... (shrink)

The phrase koine aisthesis appears, as far as I can see, very rarely in Aristotle. There is one definite use of the phrase in the De Anima, at 425a27. The word koine without aisthesis but such that the latter must be supplied may possibly occur at 431b5, but the text is uncertain there, and there is every reason why the word should be deleted from the text. This leaves us with a single occurrence of the phrase koine aisthesis in the (...) De Anima and it is used explicitly to deal with perception of the koina, the so-called common sensibles. Outside the De Anima, the phrase occurs at De Memoria 450a10, and at De Partibus Animalium 686a27, and I think nowhere else. Of these two passages that from the De Memoria is, although somewhat obscure, in line with the De Anima reference; it seems to invoke the common sense for the perception of magnitude, motion and time, and also says that an image is a pathos of the common sense, presumably because an image must be of a magnitude. The De Partibus Animalium passage is somewhat more eccentric. It is concerned with the fact that man is the only animal to walk upright, and associates this with the fact that man can think. This would not be easy if he had much of his body weighing down on him from above, for weight makes unresponsive thought and the common sense- τὴν διάνοιαν καὶ τὴν κοινὴν αἴσθησιν. Whatever be the other curiosities in this passage, the close association of thought and the common sense is itself at first sight rather strange. If any account can be given of it, it is presumably because of the facts adduced in the De Memoria passage, that thinking involves images, and these the koine aisthesis. (shrink)