Descartes and the pineal gland in animals: A frequent misinterpretation

Abstract

Rene Descartes presented a number of reasons for his choice of the pineal gland as a logical place for the soul to interact with the physical machinery of the body. It is often stated that one of his reasons was that be believed animals do not have pineal glands, whereas humans alone possess a soul and this small structure. This is a misinterpretation of Descartes. The philosopher knew that barnyard and other animals possess pineal glands, having seen this with his own eyes. His point was that the pineal is unique in humans only because of a special function — acting as the seat for the rational soul.     

The Originality of Descartes Theory about the Pineal Gland

René Descartes thought that the pineal gland is the part of the body with which the soul is most immediately associated. Several prominent historians (such as Soury, Thorndike and Sherrington) have claimed that this idea was not very original. We re-examine the evidence and conclude that their assessment was wrong. We pay special attention to the thesis about the pineal gland which Jean Cousin defended in January, 1641.     

Eighth annual meeting of the international society for the history of the neurosciences hosting the Ninth meeting of the european club for the history of neurology JULY 7–10, 2003

Damasio (1994) claims that Descartes imagined thinking as an activity separate from the body, and that the effort to understand the mind in general biological terms was retarded as a consequence of Descartes dualism. These claims do not hold; they are Damasios error. Descartes never considered what we today call thinking or cognition without taking the body into account. His new dualism required an embodied understanding of cognition. The article gives an historical overview of the development of Descartes radically new psychology from his account of algebraic reasoning in the early Regulae (1628) to his neurobiology of rationality in the late Passions of the soul (1649). The author argues that Descartes dualism opens the way for mechanistic and mathematical explanations of all kinds of physiological and psychological phenomena, including the kind of phenomena Damasio discusses in Descartes error. The models of understanding Damasio puts forward can be seen as advanced version of models which Descartes introduced in the 1640s. A far better title for his book would have been Descartes vision.     

Descartes' embodied psychology: Descartes' or Damasio's error?

Damasio (1994) claims that Descartes imagined thinking as an activity separate from the body, and that the effort to understand the mind in general biological terms was retarded as a consequence of Descartes' dualism. These claims do not hold; they are "Damasio's error". Descartes never considered what we today call thinking or cognition without taking the body into account. His new dualism required an embodied understanding of cognition. The article gives an historical overview of the development of Descartes' radically new psychology from his account of algebraic reasoning in the early Regulae (1628) to his "neurobiology of rationality" in the late Passions of the soul (1649). The author argues that Descartes' dualism opens the way for mechanistic and mathematical explanations of all kinds of physiological and psychological phenomena, including the kind of phenomena Damasio discusses in Descartes' error. The models of understanding Damasio puts forward can be seen as advanced version of models which Descartes introduced in the 1640s. A far better title for his book would have been Descartes' vision.     

Abstracts

René Descartes is at the root of the modern world. Stephen Gaukroger explains why. Descartes sought to found philosophy on an investigation of the natural world rather than on theology and ethics. His task was complicated by the trial and condemnation of Galileo. He wished, as he says, to do nothing of which the Church could disapprove. In spite of this caveat he constructed over his lifetime an account of the world, from cosmology to psychology, which was fundamentally naturalistic, replacing the teleological thought of previous centuries with an unremitting mechanism. At the heart of his thought is mathematical physics. This determined his treatment of psychophysiology and the mind-body problem. In spite of 350 years of subsequent research the general idea of his neuropsychology remains surprisingly modern. He was one of the first to see humans as part of nature and his account of the relation of mind to brain is remarkably comprehensive and clear. Gaukroger’s book, although in this reviewer’s opinion open to criticism in some respects, provides a fascinating and in-depth account of the structure of Descartes’ thought.     

Naked wax and necessary existence: modal voluntarism and Descartes’s motives

ABSTRACT

Descartes’s commitment to modal voluntarism was one of his most notorious and controversial doctrines. The reaction of contemporaries was hostility and incredulity; the reaction of modern scholars has been little different. Yet, though the issue has fomented considerable discussion and disagreement in the literature, the overwhelming majority of scholarly output has focused on questions of whether Descartes actually upheld the doctrine, or what he was committed too if he indeed did. Surprisingly, the underlying question of why Descartes would have upheld such a doctrine in the first place has gone almost entirely unnoticed and unasked. This paper proposes several possible answers to this question, each of which provides at least a partial explanation for Descartes’s attraction to modal voluntarism. The ultimate motive, however, was likely not one of positive attraction, but driven by Descartes’s anxieties over the thorny and deeply heretical implications of his conception of matter.     

Descartes' visit to the town library, or how Augustinian is Descartes' neurophysiology?

Rene Descartes was early accused of taking his central philosophical proposition from St Augustine. Did he also take his central neurophysiological concept from the same source? This is the question which this paper sets out to answer. It is concluded that the foundational neurophysiology propounded in L'Homme does indeed show strong and interesting resemblences to Augustine's largely Erasistratean version. Descartes, however, working within the new paradigm of seventeenth-century physical science, introduced a new principle: whereas Augustine's neurophysiology is pervaded throughout by a vital factor, the pneuma, Descartes' theory involved only inanimate material forces. It is concluded, further, that in spite of the interesting similarities between Augustinian and Cartesian neurophysiology there is no evidence for any direct plagiarism. It seems more likely that Augustine's influence was filtered through the Galenical physiologists of Descartes' own time and of the preceding century.     

Gall’s German enemies

ABSTRACT

Franz Joseph Gall’s (1758–1828) proposal for a new theory about how to represent the mental faculties is well known. He replaced the traditional perception-judgement-memory triad of abstract faculties with a set of 27 highly specific faculties, many of which humans share with animals. In addition, he argued that these faculties are dependent on specific cortical areas, these being his organs of mind. After several years of presenting his new views in Vienna, he was banned from lecturing for what he considered absurd reasons. The edict enticed him to make a scientific journey through the German states, both to present his ideas to targeted audiences and to collect more cases. This trip, started in 1805, was extended to include stops in Denmark, Holland, and Switzerland before finally ending in Paris in 1807. For the most part, Gall was received with great enthusiasm in what is now Germany, but there were some individuals who strongly opposed his anatomical discoveries and skull-based doctrine. In this article, we examine the concerns and arguments raised by Johann Gotlieb Walter in Berlin, Henrik Steffens in Halle, Jakob Fidelis Ackermann in Heidelberg, and Samuel Thomas Soemmerring in Munich, as well as how Gall responded to them.     

Figures des passions: La pathognomonie de Charles Le Brun

King Louis XIV's official painter, Charles Le Brun, elaborated two models of “reading”; the body. The first one, inspired by the ancient physiognomists, surveys the analogies between human and animal features. The other, ushering in a modern pathognomy partly inspired by Descartes, codifies the signs of passion displayed on human faces: in such a perspective, the movements of the body (and more specifically those of the eyebrows) are supposed to express clearly and distinctly all the emotions of the soul by which they are produced. Thus, using the cartesian physiology as his starting point Le Brun built a semiology of gesture and a rhetoric of emotion that he systematized in the illustrated lectures held at the Royal Academy in 1668. They exemplify how classicism joined the picturesque and the discursive, the natural and the convention, the meaning of gesture and the meaning of words.     

Le scepticisme et les hypothèses de la physique

The History of scepticism from Erasmus to Spinoza is often called upon to support three theses: first, that Descartes had a dogmatic notion of systematic knowledge, and therefore of physics; second, that the hypothetical epistemology of physics which spread during the xviith century was the result of a general sceptical crisis; third, that this epistemology was more successful in England than in France. I reject these three theses: I point first to the tension in Descartes’ works between the ideal of a completely certain science and a physics replete with hypotheses; further, I argue that the use of hypotheses by mechanical philosophers cannot be separated from their conception of physics; finally I show that, at the end of the xviith century, physicists in France as well as in England spoke through hypotheses and I examine different ways of explaining this shared practice. Richard H. Popkin’s book serves therefore as a starting point for insights into the general problem: to what extent and for what reasons some propositions in physics have been presented as hypotheses in the xviith century?     

The expulsion of illness or the domestication of the dead a case study of the Nyamwezi of Tanzania

For the Nyamwezi of North‐West Tanzania, illness has an essential part in their relationship with their ancestors. It is the sign that a person that has recently died is asking to be “settled”; among his kinsmen. The ritual performance will be a second funeral where the journey of the soul will be completed. It will follow the reverse model of the funeral by reuniting body and soul. Only when “settled”; in such a way is the ancestor acting as benefactor to his kinsmen. But he will not stay long in his “house”;. The soul will leave and again a sickness will be awaited in order to settle his soul for a while. Sickness appears as an expected event in the strongly formalized relationship between living and dead. The numerous variations of ritual performance that are described center clearly around a unique model. From the simple spitting on a broken piece of a calabash at a cross‐road to the elaborate blood sacrifice of an animal there is only a distance of degree in the severity of the misfortune. For the Nyamwezi the idea of sacrifice (kuhoja) finds its unit/ not in the uniqueness of the destruction performed but in the invariable concept of the movement of the soul which links life and death, ancestors and living.     

A “Calvinist” theory of matter? Burgersdijk and Descartes on res extensa

In the Dutch debates on Cartesianism of the 1640s, a minority believed that some Cartesian views were in fact Calvinist ones. The paper argues that, among others, a likely precursor of this position is the Aristotelian Franco Burgersdijk (1590-1635), who held a reductionist view of accidents and of the essential extension of matter on Calvinist grounds. It seems unlikely that Descartes was unaware of these views. The claim is that Descartes had two aims in his Replies to Arnauld: to show the compatibility of res extensa and the Catholic transubstantiation but also to differentiate the res extensa from some views of matter explicitly defended by some Calvinists. The association with Calvinism will be eventually used polemically against Cartesianism, for example in France. The paper finally suggests that, notwithstanding the points of conflict, the affinities between the theologically relevant theories of accidents, matter and extension ultimately facilitated the dissemination of Cartesianism among the Calvinists.     

Evolution from molecules to men

Early modern philosophers discussed the question of time in a variety of contexts; an enduring theme is the connection between time and the rational powers of the human soul. However, authors from a variety of confessional and philosophical perspectives also considered how the passions of the soul engage both humans and animals with the temporal world. This article considers a debate about the connections between time and the passions between two French physicians, Marin Cureau de la Chambre (1594–1669) and Pierre Chanet (c.1603–c.1660). The article explores the extent to which their background in late Aristotelian philosophy shaped this project, and its place within the broader transformation of the philosophy of time in the seventeenth century. Cureau and Chanet belong within a well-known early modern tradition of debates about animal reasoning, but their discussion of time and the passions is a significant yet neglected episode in the vernacularisation of scholastic and Aristotelian natural philosophy.     

Politics and Public Policy

Abstract

In the figure of Judge Holden, Cormac McCarthy has crafted perhaps the most haunting character in all of American literature. The antagonist of McCarthy's Blood Meridian, Holden is a richly composed portrait of human evil responsible for a litany of wicked deeds. This essay attempts to expound the character of judge Holden, to the end of clarifying McCarthy's definition of evil. It argues that McCarthy, with the judge, lays bare the contours of soul of the evil man, focusing especially on the tension between his ambitious repudiation of justice, on the one hand, and his steadfast, if unwitting, adherence to it, on the other. It is the evil man's conception of the purpose of knowledge, together with his desire to acquire boundless knowledge, that is the key to this tension in his soul.     

MY TIBETAN MOTHER KELSANG

In his youth, he worked for sixteen years in northern Tibet where he put his heart and soul into this snow-covered plateau. According to his friends, it is impossible to give a complete portrayal of his life with limited words. He is Wu Yuchu, head of the Yok Museum of Tibet. Mr. Wu is known as"Mr. Yak", a mon in his 60s working tirelessly for the preservation and promotion of yak culture.In 2017, Mr. Wu agreed to start writing a column called"Colorful Choracters of Tibet"about real Tibetan people he knew over the years on China'sTibet magozine. We will select some of the bestpieces to share with our readers.     

Zum Verhältnis von Religion und Zoologie im 17. Jahrhundert (William Harvey,Nathaniel Highmore,Jan Swammerdam)

Jan Swammerdam was one of the first scientists to do biological research on the basis of physico-theology. He was a very religious man and thought that by studying the secrets of nature he could best serve the Almighty God. He saw his life's work in demostrating the importance of God in the world of the smallest animals. The most important works of Swammerdam refer to the world of the insects and other lower animals, which he called the ?legions of the God of Israel”?, through which God tells mankind to recognize their sins, to desist from them and to honour him with greater humility. ?The miracles of nature”? he said ?are an open bible, which everywhere points to God as its eternal origin.”? This is one of the reasons for the title of the work Biblia naturae. It was Swammerdam's declared aim to demonstrate that the insects were no less perfect than the higher animals. Therefore, he tried to refute all three arguments used by his contemporaries to show up the difference between the higher animals and the insects: 1. insects were believed to have no inner anatomy; 2. they were thought to originate by spontanous generation; 3. development occurred through ?metamorphosis”?. Swammerdam succeeded in refuting all three arguments by exact studies of the nature and development of the insects. Most important for him was his aim to demonstrate that even the structure and the development of the smallest of animals demonstrate that they could only be made by God himself. Science as God's worship must be strictly objective, he said, because only than could one understand the laws of nature and in this way the real nature of God himself.     

Here We Go Again: Presidential Elections and the National Media

The fear of death is a major preoccupation in the West. This is not surprising given the debt we owe to Hobbes, who encourages this fear and makes it a central feature of his account of human nature. Rousseau, in contrast, wishes to reduce this fear as much as possible. Amour propre and the humanity Rousseau encourages are incompatible with excessive concern for self-preservation. This accounts for his antipathy to doctors and the medical arts. Rousseau, through his presentation of Emile and the savage, initially claims that the fear of death is unnatural and that humans should take a stoic stance toward it and all human attachments that lead to our "feeling death twice." A closer reading reveals that humans always have an awareness of death and that modern humans cannot entirely avoid these attachments. We can, however, avoid making preservation our highest goal, and this is essential to our happiness and ability to have compassion for others.     

Schweretheorie und Weltbild des Nikolaus von Kues: Zu ihrer vermeintlichen Modernität

Regarding his world view and his heaviness theory Nicolaus Cusanus is imputed to having used (at least to some extent) forebodings and anticipations of modern conceptions. In the dialog Idiota de staticis experimentis he imputed the quantitative points of view of modern physics programmatically. In contrast with this, this article will show that the quantitative point of view is proposed for an inapt object at least. Cusanus based his reflections on one hand on the Aristotelic theories of elements and their heaviness with ‘positive’ and ‘negative’ weight (only thus, assumed inconsistencies can be explained), on the other hand he wants to determine the essential, qualitative properties of the forma, while only their complete abstraction by reduction on the mass without properties should result in an object for comparative weighings — lately in different ways by René Descartes and Isaac Newton. The putative modernness of cusanian conceptions compared with Aristotle are based on the tradition of platonian and stoic modifications which sooner were compatible with christian ideas.