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On the Soul

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On the Soul

On the Soul (self-motion (action). Humans have all these as well as intellect.

"Expositio et quaestiones" in Aristoteles De Anima (Jean Buridan, c. 1362)

Aristotle holds that the soul (psyche, ψυχή) is the form, or essence of any living thing; that it is not a distinct substance from the body that it is in. That it is the possession of soul (of a specific kind) that makes an organism an organism at all, and thus that the notion of a body without a soul, or of a soul in the wrong kind of body, is simply unintelligible. (He argues that some parts of the soul—the intellect—can exist without the body, but most cannot.) It is difficult to reconcile these points with the popular picture of a soul as a sort of spiritual substance "inhabiting" a body. Some commentators have suggested that Aristotle's term soul is better translated as lifeforce.[1]

In 1855, Charles Collier published a translation titled On the Vital Principle;

  • Greek text: (HTML)Mikros Apoplous
  • English text: Electronic Text Center, University of Virginia Library (HTML)

External links

  • J. Barnes, M. Schofield, & R. Sorabji, Articles on Aristotle, vol. 4, 'Psychology and Aesthetics'. London, 1979.
  • M. Durrant, Aristotle's De Anima in Focus. London, 1993.
  • M. Nussbaum & A. O. Rorty, Essays on Aristotle's De Anima. Oxford, 1992.
  • F. Nuyens, L'évolution de la psychologie d'Aristote. Louvain, 1973.
  • Rüdiger Arnzen, Aristoteles' De anima : eine verlorene spätantike Paraphrase in arabischer und persischer Überlieferung (1998: Leiden, Brill) ISBN 90-04-10699-5.

Further reading

  • Mark Shiffman, De Anima: On the Soul, (Newburyport, MA: Focus Publishing/R. Pullins Co, 2011). ISBN 978-1585102488
  • Joe Sachs, Aristotle's On the Soul and On Memory and Recollection (Green Lion Press, 2001). ISBN 1-888009-17-9
  • Hugh Lawson-Tancred, De Anima (On the Soul) (Penguin Classics, 1986). ISBN 978-0140444711
  • Hippocrates Apostle, Aristotle's On the Soul, (Grinell, Iowa: Peripatetic Press, 1981). ISBN 0-9602870-8-6
  • D.W. Hamlyn, Aristotle De Anima, Books II and III (with passages from Book I), translated with Introduction and Notes by D.W. Hamlyn, with a Report on Recent Work and a Revised Bibliography by Christopher Shields (Oxford: Clarendon Press, 1968).
  • Walter Stanley Hett, On the Soul (Cambridge, Mass. : Harvard University Press "Loeb Classical Library", 1957).
  • John Alexander Smith, On the Soul (1931)
    • MIT Internet Classics Archive
    • Adelaide
    • Google Books
    • Classics in the History of Psychology
    • UVa EText Center
    • Georgetown
  • R. D. Hicks, Aristotle De Anima with Translation, Introduction, and Notes (Cambridge University Press, 1907).
    • Free Audiobook (Public Domain) of De Anima at
  • Edwin Wallace, Aristotle's Psychology in Greek and English, with Introduction and Notes by Edwin Wallace (Cambridge University Press, 1882).
  • Thomas Taylor, On the Soul (Prometheus Trust, 2003, 1808). ISBN 1-898910-23-5

English translations

  1. ^ [2] "... in the Old Testament and Homeric notions of soul as life-force, through Plato's infusion of an immortal and divine power, Aristotle's functional matter-form theory, the New Testament's doctrine of a double life and a double death, and its culmination in Augustine's Christian-Platonist synthesis." "Contents: Ancient Hebrew and Homeric Greek life-force; Plato, Aristotle and Hellenistic thought; From the New Testament to St Augustine; Medieval Islamic and Christian ideas; Renaissance Platonism, Hermeticism and other heterodoxies; Mind and soul in English from Chaucer to Shakespeare; The triumph of rationalist concepts of mind and intellect; The empiricists’ advocacy of matter designed for thought; Bibliography; Indexes." Retrieved 1 March 2011.
  2. ^  
  3. ^ In chapter 3 of Book II he enumerates five psychic powers: the nutritive (θρεπτικόν), the sensory (αἰσθητικόν), the appetitive (ὀρεκτικόν), the locomotive (κινητικὸν), and the power of thinking (διανοητικόν).
  4. ^ Torrell, 161 ff.
  5. ^ Rüdiger Arnzen (ed.) , Aristoteles' De anima, Volume 9 of Aristoteles Semitico-Latinus, 1998. Alfred L. Ivry, The Arabic Text of Aristotle's "De anima" and Its Translator, Oriens Vol. 36 (2001), pp. 59-77. On the reception of De Anima in Arabic tradition in general see Rafael Ramo Guerrero, La recepcion arabe del DE ANIMA de Aristoteles: Al Kindi y Al Farabi, Madrid (1992) for an overview of literature. Compare also the Arabic text known as Theologia Aristotelis, which is in fact a paraphrase of Plotinus Six Enneads.
  6. ^ Josep Puig Montada, Aristotle's On the Soul in the Arabic tradition, Stanford Encyclopedia of Philosophy, (2012).


Some manuscripts

A later Arabic translation of De Anima into Arabic is due to Ishaq ibn Hunayn (d. 910). Ibn Zura (d. 1008) made a translation into Arabic from Syriac. The Arabic versions show a complicated history of mutual influence Avicenna (d. 1037) wrote a commentary on De Anima, which was translated into Latin by Michael Scotus. Averroes (d. 1198) used two Arabic translations, mostly relying on the one by Ishaq ibn Hunayn, but occasionally quoting the older one as an alternative. Zerahiah ben Shealtiel Ḥen translated Aristotle's De anima from Arabic into Hebrew in 1284. Both Averroes and Zerahiah used the translation by Ibn Zura.[6]

In Late Antiquity, Aristotelian texts became re-interpreted in terms of Neoplatonism. There is an paraphrase of De Anima which survives in Arabic tradition which reflects such a Neoplatonic synthesis. The text was translated into Persian in the 13th century. It is likely based on a Greek original which is no longer extant, and which was further syncretised in the heterogenous process of adoption into early Arabic literature.[5]

Arabic paraphrase

Perhaps the most important but obscure argument in the whole book is Aristotle's demonstration of the immortality of the thinking part of the human soul, also in Chapter V. Taking a premise from his Physics, that as a thing acts, so it is, he argues that since the mind acts with no bodily organ, it exists without the body. And if it exists apart from matter, it therefore cannot be corrupted. And therefore the human mind is immortal.

Aristotle also argues that the mind (only the agent intellect) is immaterial, able to exist without the body, and immortal. His arguments are notoriously concise. This has caused much confusion over the centuries, causing a rivalry between different schools of interpretation, most notably, between the Arabian commentator Averroes and St Thomas Aquinas. One argument for its immaterial existence runs like this: if the mind were material, then it would have to possess a corresponding thinking-organ. And since all the senses have their corresponding sense-organs, thinking would then be like sensing. But sensing can never be false, and therefore thinking could never be false. And this is of course untrue. Therefore, Aristotle concludes, the mind is immaterial.

The argument for the existence of the agent intellect in Chapter V perhaps due to its concision has been interpreted in a variety of ways. One standard scholastic interpretation is given in the Commentary on De anima begun by Thomas Aquinas when he was regent at the studium provinciale at Santa Sabina in Rome, the forerunner of the Pontifical University of Saint Thomas Aquinas, Angelicum. Aquinas' commentary is based on the new translation of the text from the Greek completed by Aquinas' Dominican associate at Viterbo William of Moerbeke in 1267.[4] The argument, as interpreted by St Thomas Aquinas, runs something like this: in every nature which is sometimes in potency and act, it is necessary to posit an agent or cause within that genus that, just like art in relation to its suffering matter, brings the object into act. But the soul is sometimes in potency and act. Therefore, the soul must have this difference. In other words, since the mind can move from not understanding to understanding and from knowing to thinking, there must be something to cause the mind to go from knowing nothing to knowing something, and from knowing something but not thinking about it to actually thinking about it.

Book III discusses the mind or rational soul, which belongs to humans alone. He argues that thinking is different from both sense-perception and imagination because the senses can never lie and imagination is a power to make something sensed appear again, while thinking can sometimes be false. And since the mind is able to think when it wishes, it must be divided into two faculties: one which contains all the mind's ideas which are able to be considered, and another which brings them into act, i.e. to be actually thinking about them. These are called the possible and agent intellect. The possible intellect is the store-house of all concepts, i.e. universal ideas like "triangle", "tree", "man", "red", etc. When the mind wishes to think, the agent intellect recalls these ideas from the possible intellect and combines them to form thoughts. The agent intellect is also the faculty which abstracts the "whatness" or intelligibility of all sensed objects and stores them in the possible intellect. For example, when a student learns a proof for the Pythagorean theorem, his agent intellect abstracts the intelligibility of all the images his eye senses (and that are a result of the translation by imagination of sense perceptions into immaterial phantasmata), i.e. the triangles and squares in the diagrams, and stores the concepts that make up the proof in his possible intellect. When he wishes to recall the proof, say, for demonstration in class the next day, his agent intellect recalls the concepts and their relations from the possible intellect and formulates the statements that make up the arguments in the proof.

Book II contains his scientific determination of the nature of the soul. By dividing substance into its three meanings (matter, form, and what is composed of both), he shows that the soul must be the first actuality of a naturally organised body. This is its form or essence. It cannot be matter because the soul is that in virtue of which things have life, and matter is only being in potency. The rest of the book is divided into a determination of the nature of the nutritive and sensitive souls. (1) All species of living things, plant or animal, must be able to nourish themselves and reproduce others of the same kind. (2) All animals have, in addition to the nutritive power, sense-perception, and thus they all have at least the sense of touch, which he argues is presupposed by all other senses, and the ability to feel pleasure and pain, which is the simplest kind of perception. If they can feel pleasure and pain they also have desire. Some animals in addition have other senses (sight, hearing, taste), and some have more subtle versions of each (the ability to distinguish objects in a complex way, beyond mere pleasure and pain.) He discusses how these function. Some animals have in addition the powers of memory, imagination, and self-motion.

Book I contains a summary of Aristotle's method of investigation and a dialectical determination of the nature of the soul. He begins by conceding that attempting to define the soul is one of the most difficult questions in the world. But he proposes an ingenious method to tackle the question: just as we can come to know the properties and operations of something through scientific demonstration, i.e. a geometrical proof that a triangle has its interior angles equal to two right angles, since the principle of all scientific demonstration is the essence of the object, so too we can come to know the nature of a thing if we already know its properties and operations. It is like finding the middle term to a syllogism with a known conclusion. Therefore, we must seek out such operations of the soul to determine what kind of nature it has. From a consideration of the opinions of his predecessors, a soul, he concludes, will be that in virtue of which living things have life.


DA III.1 argues there are no other senses than the five already mentioned;
DA III.2 discusses the problem of what it means to “sense sensing” (i.e., to “be aware” of sensation);
DA III.3 investigates the nature of imagination;
DA III.4–7 discuss thinking and the intellect, or mind;
DA III.8 rearticulates the definition and nature of soul;
DA III.9–10 discuss the movement of animals possessing all the senses;
DA III.11 discusses the movement of animals possessing only touch;
DA III.12–13 take up the question of what are the minimal constituents of having a soul and being alive.

Book III

DA II.1–3 gives Aristotle’s definition of soul and outlines his own study of it,[3] which is then pursued as follows:
DA II.4 discusses nutrition and reproduction;
DA II.5–6 discuss sensation in general;
DA II.7–11 discuss each of the five senses (in the following order: sight, sound, smell, taste, and touch—one chapter for each);
DA II.12 again takes up the general question of sensation;

Book II

DA I.1 introduces the theme of the treatise;
DA I.2–5 provide a survey of Aristotle’s predecessors’ views about the soul

Book I

The treatise is divided into three books, and each of the books is divided into chapters (five, twelve, and thirteen, respectively). The treatise is near-universally abbreviated “DA,” for “De anima,” and books and chapters generally referred to by Roman and Arabic numerals, respectively, along with corresponding Bekker numbers. (Thus, “DA I.1, 402a1” means “De anima, book I, chapter 1, Bekker page 402, Bekker column a [the column on the left side of the page], line number 1.)

Division of chapters


  • Division of chapters 1
    • Book I 1.1
    • Book II 1.2
    • Book III 1.3
    • Summary 1.4
  • Arabic paraphrase 2
  • Some manuscripts 3
  • References 4
  • English translations 5
  • Further reading 6
  • External links 7


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