The Monadology (French: La Monadologie, 1714) is one of Gottfried Leibniz's best known works representing his later philosophy. It is a short text which sketches in some 90 paragraphs a metaphysics of simple substances, or monads. In it, he offers a new solution to mind and matter interaction by means of a pre-established harmony expressed as the 'Best of all possible worlds' form of optimism.

Daniel Garber presents an illuminating study of Leibniz's conception of the physical world. Leibniz's commentators usually begin with monads, mind-like simple substances, the ultimate building-blocks of the Monadology. But Leibniz's apparently idealist metaphysics is very puzzling: how can any sensible person think that the world is made up of tiny minds? In this book, Garber tries to make Leibniz's thought intelligible by focusing instead on his notion of body. Beginning with Leibniz's earliest writings, he shows how Leibniz starts as a Hobbesian with a robust sense of the physical world, and how, step by step, he advances to the monadological metaphysics of his later years. Much of the book's focus is on Leibniz's middle years, where the fundamental constituents of the world are corporeal substances, unities of matter and form understood on the model of animals. For Garber monads only enter fairly late in Leibniz's career, and when they enter, he argues, they do not displace bodies but complement them. In the end, though, Garber argues that Leibniz never works out the relation between the world of monads and the world of bodies to his own satisfaction: at the time of his death, his philosophy is still a work in progress.

This anthology is about the signal change in Leibniz's metaphysics with his explicit adoption of substantial forms in 1678-79. This change can either be seen as a moment of discontinuity with his metaphysics of maturity or as a moment of continuity, such as a passage to the metaphysics from his last years. Between the end of his sejour at Paris (November 1676) and the first part of the Hanover period, Leibniz reformed his dynamics and began to use the theory of corporeal substance. This book explores a very important part of the philosophical work of the young Leibniz. Expertise from around the globe is collated here, including Daniel Garber's work based on the recent publication of Leibniz's correspondence from the late 1690s, examining how the theory of monads developed during these crucial years. Richard Arthur argues that the introduction of substantial forms, reinterpreted as enduring primitive forces of action in each corporeal substance, allows Leibniz to found the reality of the phenomena of motion in force, and thus avoid reducing motion to a mere appearance. Amongst other themes covered in this book, Pauline Phemister's paper investigates Leibniz's views on animals and plants, highlighting changes, modifications and elaborations over time of Leibniz's views and supporting arguments and paying particular attention to his claim that the future is already contained in the seeds of living things. The editor, Adrian Nita, contributes a paper on the continuity or discontinuity of Leibniz's work on the question of the unity and identity of substance from the perspective of the relation with soul (anima) and mind (mens).

Larry M. Jorgensen provides a systematic reappraisal of Leibniz's philosophy of mind, revealing the full metaphysical background that allowed Leibniz to see farther than most of his contemporaries. In recent philosophy much effort has been put into discovering a naturalized theory of mind. Leibniz's efforts to reach a similar goal three hundred years earlier offer a critical stance from which we can assess our own theories. But while the goals might be similar, the content of Leibniz's theory significantly diverges from that of today's thought. Perhaps surprisingly, Leibniz's theological commitments yielded a thoroughgoing naturalizing methodology: the properties of an object are explicable in terms of the object's nature. Larry M. Jorgensen shows how this methodology led Leibniz to a fully natural theory of mind.

The revival of Leibniz studies in the past twenty-five years has cast important new light on both the context and content of Leibniz's philosophical thought. Where earlier English-language scholarship understood Leibniz's philosophy as issuing from his preoccupations with logic and language, recent work has recommended an account on which theological, ethical, and metaphysical themes figure centrally in Leibniz's thought throughout his career. The significance of these themes to the development of Leibniz's philosophy is the subject of increasing attention by philosophers and historians. This collection of new essays by a distinguished group of scholars offers an up-to-date overview of the current state of Leibniz research. In focusing on nature and freedom, the volume revisits two key topics in Leibniz's thought, on which he engaged both contemporary and historical arguments. Important contributions to Leibniz scholarship in their own right, these articles collectively provide readers a framework in which to better situate Leibniz's distinctive philosophy of nature and the congenial home for a morally significant freedom that he took it to provide.

Locke and Leibniz on Substance gathers together papers by an international group of academic experts, examining the metaphysical concept of substance in the writings of these two towering philosophers of the early modern period. Each of these newly-commissioned essays considers important interpretative issues concerning the role that the notion of substance plays in the work of Locke and Leibniz, and its intersection with other key issues, such as personal identity. Contributors also consider the relationship between the two philosophers and contemporaries such as Descartes and Hume.

Gottfried Wilhelm Leibniz was one of the central figures of seventeenth-century philosophy, and a huge intellectual figure in his age. This book from Glenn A. Hartz (editor of the influential Leibniz Review) is an advanced study of Leibniz's metaphysics. Hartz analyzes a very complicated topic, widely discussed in contemporary commentaries on Leibniz, namely the question of whether Leibniz was a metaphysical idealist, realist, or whether he tried to reconcile both trends in his mature philosophy. Because Leibniz is notoriously unclear about this, much has been written on the subject. In recent years, the debate has centered on whether it is possible to maintain compatibility between the two trends. In this controversial book, Hartz demonstrates that it is not possible to maintain compatibility of idealist and realist views - they must be understood as completely separate theories. As the first major work on realism in Leibniz's metaphysics, this key text will interest international Leibniz scholars, as well as students at the graduate level.

"His book provides a comprehensive survey of G. W. Leibniz's deep and complex engagement with the sciences of life, in areas as diverse as medicine, physiology, taxonomy, generation theory, and paleontology. It is shown that these sundry interests were not only relevant to his core philosophical interests, but indeed often provided the insights that in part led to some of his most familiar philosophical doctrines, including the theory of corporeal substance and the theory of organic preformation"--Provided by publisher.

In this first book-length treatment of Descartes' important and influential natural philosophy, Daniel Garber is principally concerned with Descartes' accounts of matter and motion—the joint between Descartes' philosophical and scientific interests. These accounts constitute the point at which the metaphysical doctrines on God, the soul, and body, developed in writings like the Meditations, give rise to physical conclusions regarding atoms, vacua, and the laws that matter in motion must obey. Garber achieves a philosophically rigorous reading of Descartes that is sensitive to the historical and intellectual context in which he wrote. What emerges is a novel view of this familiar figure, at once unexpected and truer to the historical Descartes. The book begins with a discussion of Descartes' intellectual development and the larger project that frames his natural philosophy, the complete reform of all the sciences. After this introduction Garber thoroughly examines various aspects of Descartes' physics: the notion of body and its identification with extension; Descartes' rejection of the substantial forms of the scholastics; his relation to the atomistic tradition of atoms and the void; the concept of motion and the laws of motion, including Descartes' conservation principle, his laws of the persistence of motion, and his collision law; and the grounding of his laws in God.