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Ennead I.1 is a succinct and concentrated analysis of key themes in Plotinus' psychology and ethics. It focuses on the soul-body relation, discussing various Platonic, Aristotelian, and Stoic views before arguing that there is only a soul-trace in the body (forming with the body a “compound”), while the reasoning soul itself is impassive and flawless. The soul-trace hypothesis is used to account for human emotions, beliefs, and perceptions, and human fallibility in general. Its problematic relation to our rational powers, as well as the question of moral responsibility, are explored. Plotinus develops his original and characteristic concept of the self or “we,” which is so called because it is investigated as something common to all humans (rather than a private individual self), and because it is multiple, referring to the reasoning soul or to the “living thing” composed of soul-trace and body. Plotinus explores the relation between the “we” and consciousness, and also its relation to the higher metaphysical entities, the Good, and Intellect.
 

How was the universe created, and what is our place within it? These are the questions at the heart of Plotinus’ Against the Gnostics. For the Gnostics, the universe came into being as a result of the soul’s fall from intelligible reality—it is the evil outcome of a botched creation. Plotinus challenges this, and insists that the soul’s creation of the world is the necessary consequence of its contemplation of the ideal forms. While the Gnostics claim to despise the visible universe, Plotinus argues that such contempt displays their ignorance of the higher realities of which the cosmos is a beautiful image.

Against the Gnostics is a polemical text. It aims to show the superiority of Plotinus’ philosophy over that of his Gnostic rivals, and poses unique challenges: Plotinus nowhere identifies his opponents by name, he does not set out their doctrines in any great detail, and his arguments are frequently elliptical. The detailed commentary provides a guide through these difficulties, making Plotinus’ meandering train of thought in this important treatise accessible to the reader.

Ennead IV.4.30–45 and IV.5 retrieves the unity in this last section of Plotinus’ treatise on Problems concerning the Soul. Combining translation with commentary, Gurtler enhances both the accuracy of the translation and the recovery of Plotinus’ often unsuspected originality. This is especially true for IV.5, where previous translations fail to convey the concise nature of his argument against both the Aristotelian and Platonic theories of vision. Plato and Aristotle each claim that vision depends on the light between the eye and the object, but Plotinus presents evidence that this is not the case and develops a novel theory of light as a second activity that moves from source to object directly, even arguing that color is in the light itself rather than merely a quality of the object. This theory of vision, in turn, depends on the nature of sympathy developed especially in IV.4.30–45, where Plotinus shows how action at a distance is both possible and necessary for the proper unity in diversity of the sensible cosmos.

 

Plotinus' Treatise V.1 comes closer than any other to providing an outline of his entire spiritual and metaphysical system, and as such it may serve to some degree as an introduction to his philosophy. It addresses in condensed form a great many topics to which Plotinus elsewhere devotes extended discussion, including the problem of the multiple self; eternity and time; the unity-in-duality of intellect and the intelligible; and the derivation of intelligible being from the One. Above all, it shows that the so-called “three hypostases”—soul, intellect, and the One—are best understood not as a sequence of three things additional to one another, but as three levels of possession of the same content, so that each lower level—soul in relation to intellect and intellect in relation to the One—is an “image” and “expression” of its superior. Plotinus exhorts the human soul to overcome its alienation from its own true nature and its divine origin by first recognizing itself as superior to the body and the same in kind as the animating principle of the entire cosmos, and then discovering within itself the still higher levels of reality from which it derives: intellect and, ultimately, the One or Good, the supreme first principle of all things. To do so the soul must redirect its attention inward and upward to become aware of the divinity which is always within it but from which it is distracted by the clamor of the senses.

"Ennead I.6 is probably the best known and most influential treatise of Plotinus, especially for Renaissance artists and thinkers. Although the title may suggest a work on aesthetics and thus of limited focus, this is far from the case. For it quickly becomes apparent that Plotinus’ main interest is in transcendent beauty, which he identifies with the Good, the goal of all philosophical endeavor in the Platonist’s search to assimilate himself with the divine. 
 

The treatise is at once a philosophical search for the nature of the divine and at the same time an encouragement to the individual to aspire to this goal by taking his start from the beauty which is experienced in this world; for it is an image of transcendent beauty. This upward movement of the treatise reflects throughout the speech of Socrates in Plato’s Symposium in which he recounts the exhortation of the priestess Diotima to ascend from earthly to transcendent beauty, which for Plotinus is identified with the divine."

Philosophy means “the love of wisdom.” Kreeft uses the dialogues of Socrates to help the reader grow in that love. He says that no master of the art of philosophizing has ever been more simple, clear, and accessible to beginners as has Socrates. He focuses on Plato’s dialogues, the Apology of Socrates, as a lively example to imitate, and a model partner for the reader for dialogue. Kreeft calls it “the Magna Carta of philosophy,” a timeless classic that is “a portable classroom.”

“If only every introductory course were as engaging as Philosophy 101 by Peter Kreeft! Kreeft offers a marvelous way of using Plato’s Apology both to introduce the whole scope of philosopher and to evoke a personal response. Even the diffident freshman, prone to keeping a new subject like philosopher as arm’s length, will feel the enchantment of love-for-wisdom that philosophy is supposed to be.” – Joseph W. Koterski, S.J., chair, Department of Philosophy, Fordham University

“A terrific introduction to philosophy through this not uncontroversial commentary on Plato’s Apology. Not everyone will agree that Socrates provided the best possible defense for himself nor that he intended to. But Kreeft’s is an eminently defensible reading of the Apology and will awaken many a student to the delights of Plato and Philosophy. The comparisons of Socrates with Christ are fascinating. This book will go a long way to consoling those who are not privileged to have Socrates or Kreeft as teachers in the flesh.” – Janet Smith, Sacred Heart Major Seminary, Detroit

Although plants comprise more than 90% of all visible life, and land plants and algae collectively make up the most morphologically, physiologically, and ecologically diverse group of organisms on earth, books on evolution instead tend to focus on animals. This organismal bias has led to an incomplete and often erroneous understanding of evolutionary theory. Because plants grow and reproduce differently than animals, they have evolved differently, and generally accepted evolutionary views—as, for example, the standard models of speciation—often fail to hold when applied to them.

Tapping such wide-ranging topics as genetics, gene regulatory networks, phenotype mapping, and multicellularity, as well as paleobotany, Karl J. Niklas’s Plant Evolution offers fresh insight into these differences. Following up on his landmark book The Evolutionary Biology of Plants—in which he drew on cutting-edge computer simulations that used plants as models to illuminate key evolutionary theories—Niklas incorporates data from more than a decade of new research in the flourishing field of molecular biology, conveying not only why the study of evolution is so important, but also why the study of plants is essential to our understanding of evolutionary processes. Niklas shows us that investigating the intricacies of plant development, the diversification of early vascular land plants, and larger patterns in plant evolution is not just a botanical pursuit: it is vital to our comprehension of the history of all life on this green planet.

Plotinus’ Ennead V.8, originally part of a single work (with III.8, V.5, and II.9), provides the foundation for a positive view of the universe as an image of divine beauty against the Gnostic rejection of the world. Although it emphasizes the cosmic dimension of beauty, it is, as are most treatises of Plotinus, concerned with the individual soul. The notion that the artist has within him an idea of beauty that derives directly from the intelligible world in fact coincides with his theory that each one of us has access to Intellect through his or her own intellect. It is the exploitation of this theme that forms the central dynamic of the treatise, with its stress on our ability to "see" and be one with the intelligible world and its beauty.

Anthony Elliott presents a comprehensive introduction to psychoanalytic theory and its applications in the social sciences and humanities in this new and fully revised second edition of Psychoanalytic Theory. Elliott provides lucid interpretations of key psychoanalytic theorists such as Freud, Klein, Winnicott, Lacan, Deleuze, Kristeva, and Zizek. This revised edition has much new material, including a survey of psychoanalytic approaches to race and postcolonialism from Fanon to Homi Bhabha, as well as a look at the reframing of sexuality studies by such feminist theorists as Judith Butler, Helene Cixous, and Luce Irigaray.

The book follows major themes, highlighting the similarities and differences among influential thinkers and schools of thought. At the same time, Psychoanalytic Theory is structured so that the chapters can be read in any order. Each one includes an introductory overview and summary, as well as biographical and historical material for each theorist discussed. This book is an essential starting point for any exploration of the contribution of psychoanalysis to contemporary theory.