The concept of complexity has become very important in theoretical biology. It is a many faceted concept and too new and ill defined to have a universally accepted meaning. This review examines the development of this concept from the point of view of its usefulness as a criteria for the study of living systems to see what it has to offer as a new approach. In particular, one definition of complexity has been put forth which has the necessary precision and (...) rigor to be considered as a useful categorization of systems, especially as it pertains to those we call living. This definition, due to Robert Rosen, has been developed in a number of works and involves some deep new concepts about the way we view systems. In particular, it focuses on the way we view the world and actually practice science through the use of the modelling relation. This mathematical object models the process by which we assign meaning to the world we perceive. By using the modelling relation, it is possible to identify the subjective nature of our practices and deal with this issue explicitly. By so doing, it becomes clear that our notion of complexity and especially its most popular manifestations, is in large part a product of the historical processes which lead to the present state of scientific epistemology. In particular, it is a reaction to the reductionist/mechanistic view of nature which can be termed the Newtonian Paradigm. This approach to epistemology has dominated for so long that its use as a model has become implicit in most of what we do in and out of science. The alternative to this approach is examined and related to the special definition of complexity given by Rosen. Some historical examples are used to emphasize the dependence of our view of what is complex in a popular sense on the ever changing state of our knowledge. The role of some popular concepts such as chaotic dynamics are examined in this context. The fields of artificial life and related areas are also viewed from the perspective of this rigorous view of complexity and found lacking. The notion that in some way life exists at the edge of chaos is examined from the perspective of the second law of thermodynamics given by Schneider and Kay. Finally, the causal elements in complex systems are explored in relation to complexity. Rosen has shown that a clear difference in causal relations exists between complex and simple systems and that this difference leads to a uniquely useful definition of what we mean by living. Rosen makes it very clear that the class of systems which are complex is a much larger class than those which we call living. For that reason, the focus of this review will be on complexity as a stepping stone towards the deeper question of what makes a system alive. (shrink)

This essay is an attempt to construct an artificial dialog loosely modeled after that sought by Robert Maynard Hutchins who was a significant influence on many of us including and especially Robert Rosen. The dialog is needed to counter the deep and devastating effects of Cartesian reductionism on today’s world. The success of such a dialog is made more probable thanks to the recent book by A. Louie. This book makes a rigorous basis for a new paradigm, the one pioneered (...) by the late Robert Rosen. If we are to make such a paradigm shift happen, it has to be in the spirit of the dialog. The relationship between science, economics, technology and politics has to be openly recognized and dealt with. The message that Rosen sent to us has to be told outside small select circles of devotees. The situation has even been described by some as resembling a cult. This is no way for universal truths like these to be seen. The essay examines why this present situation has happened and identifies the systemic nature of the problem in terms of Rosen’s concepts about systems. The dialog involves works by George Lakoff, W. Brian Arthur, N. Katherine Hayles, Robert Reich and Dorion Sagan. These scholars each have their own approach to identifying the nature of the interacting systems that involve human activity and the importance of identifying levels of abstraction in analyzing systems. Pooling their insights into different facets of a complex system is very useful in constructing a model of the self referential system that humans and their technology have shaped. The role of the human component in the whole earth system is the goal of the analysis. The impact of the Cartesian reductionist paradigm on science and the related aspects of human activity are examined to establish an explanation for the isolation of Rosen’s paradigm. The possible way to proceed is examined in the conclusion. (shrink)

David Hume is famous as a sceptical philosopher but the nature of his scepticism is difficult to pin down. Hume's True Scepticism provides the first sustained interpretation of Part 4 of Book 1 of Hume's Treatise: his deepest engagement with sceptical arguments, in which he notes that, while reason shows that we ought not to believe the verdicts of reason or the senses, we do so nonetheless. Donald C. Ainslie addresses Hume's theory of representation; his criticisms of Locke, Descartes, (...) and other predecessors; his account of the imagination; his understanding of perceptions and sensory belief; and his bundle theory of the mind and his later rejection of it. (shrink)

Revered for his contributions to empiricism, skepticism and ethics, David Hume remains one of the most important figures in the history of Western philosophy. His first and broadest work, A Treatise of Human Nature, comprises three volumes, concerning the understanding, the passions and morals. He develops a naturalist and empiricist program, illustrating that the mind operates through the association of impressions and ideas. This Companion features essays by leading scholars that evaluate the philosophical content of the arguments in Hume's Treatise (...) while considering their historical context. The authors examine Hume's distinctive views on causation, motivation, free will, moral evaluation and the origins of justice, which continue to influence present-day philosophical debate. This collection will prove a valuable resource for students and scholars exploring Hume, British empiricism and modern philosophy. (shrink)

In the Treatise of Human Nature , Hume argues that, because we have adequate ideas of the smallest parts of space, we can infer that space itself must conform to our representations of it. The paper examines two challenges to this argument based on Descartes's and Locke's treatments of adequate ideas, ideas that fully capture the objects they represent. The first challenge, posed by Arnauld in his Objections to the Meditations , asks how we can know that an idea is (...) adequate. The second challenge, implicit in Locke's Essay , asks how an empiricist can characterize an idea as inadequate, as both picking out an object and yet failing to capture it fully. In showing how Hume responds to these challenges, his theory of perceptual representation is explained and his treatment of space is related to his scepticism. His conclusion is shown not to be a characterization of space as it exists wholly apart from our powers of conception. Instead, in an adumbration of Kant, his claim is restricted to space as it appears to us. (shrink)

Many believe that the rational evaluation of actions depends on the rational evaluation of even basic desires. Hume, though, viewed desires as "original existences" which cannot be contrary to either truth or reason. Contemporary critics of Hume, including Norman, Brandt and Parfit, have sought a basis for the rational evaluation of desires that would deny some basic desires reason-giving force. I side with Hume against these modern critics. Hume's concept of rational evaluation is admittedly too narrow; even basic desires are, (...) despite their nonrepresentational nature, subject to rational evaluation. But this evaluation is not relevant to their tendency to generate reasons for action, and does not undermine the spirit of the Humean view of rational action. (shrink)

Neo-Humean instrumentalists hold that anagent's reasons for acting are grounded in theagent's desires. Numerous objections have beenleveled against this view, but the mostcompelling concerns the problem of ``aliendesires'' – desires with which the agent doesnot identify. The standard version ofneo-Humeanism holds that these desires, likeany others, generate reasons for acting. Avariant of neo-Humeanism that grounds anagent's reasons on her values, rather than allof her desires, avoids this implication, but atthe cost of denying that we have reasons to acton innocent whims. (...) A version of neo-Humeanismthat holds that an agent has reason to satisfyall of her desires that are not in conflictwith her values appears to allow us to grantthe reason-giving force of innocent whims whiledenying the reason-giving force of alien desires. (shrink)

One of the attractions of the Humean instrumentalist theory of practical rationality is that it appears to offer a special connection between an agent's reasons and her motivation. The assumption that Humeanism is able to assert a strong connection between reason and motivation has been challenged, most notably by Christine Korsgaard. She argues that Humeanism is not special in the connection it allows to motivation. On the contrary, Humean theories of practical rationality do connect reasons and motivation in a unique (...) and attractive way, though the nature of this connection has sometimes been misunderstood by both defenders and detractors of the theory. (shrink)

Neo-Humean instrumentalist theories of reasons for acting have been presented with a dilemma: either they are normatively trivial and, hence, inadequate as a normative theory or they covertly commit themselves to a noninstrumentalist normative principle. The claimed result is that no purely instrumentalist theory of reasons for acting can be normatively adequate. This dilemma dissolves when we understand what question neo-Humean instrumentalists are addressing. The dilemma presupposes that neo-Humeans are attempting to address the question of how to act, 'simpliciter'. Instead, (...) they are evaluating actions from the agent's normative perspective. (shrink)

The article presents a new interpretation of Hume's treatment of personal identity, and his later rejection of it in the “Appendix” to the Treatise. Hume's project, on this interpretation, is to explain beliefs about persons that arise primarily within philosophical projects, not in everyday life. the belief in the identity and simplicity of the mind as a bundle of perceptions is an abstruse belief, not one held by the “vulgar” who rarely turn their minds on themselves so as to think (...) of their perceptions. the author suggests that it is this philosophical observation of the mind that creates the problems that Hume finally acknowledges in the “Appendix.” He is unable to explain why we believe that the perceptions by means of which we observe our minds while philosophizing are themselves part of our minds. This suggestion is then tested against seven criteria that any interpretation of the “Appendix” must meet. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Scepticism About Persons in Book II of Hume’s TreatiseDonald C. AinslieBook ii of Hume’s Treatise—especially its first two Parts on the “indirect passions” of pride, humility, love, and hatred—has mystified many of its interpreters.1 Hume clearly thinks these passions are important: Not only does he devote more space to them than to his treatment of causation, but in the “Abstract” to the Treatise, he tells us that Book II (...) “contains opinions that are altogether as new and extraordinary” (T 659) as those found in Book I. And, he says, these opinions constitute “the foundation” (T 646) for his treatment of morals and politics in Book III.2 The mystery arises, however, because in the actual text of [End Page 469] Book II Hume never spells out what makes his opinions on the passions “new and extraordinary,” nor why they are foundational for his moral theory.Thus some of his interpreters, notably Norman Kemp Smith, conclude that Hume was simply mistaken in his assessment of his treatment of the passions. While his accounts of the will and of motivation (in the early Sections of Part iii of Book II) are significant, Kemp Smith takes the extended analysis of the indirect passions to spring merely from his misplaced enthusiasm for associationist psychology. As such, the philosophical lessons to be learned from the first two Parts of Book II are slim.3 Páll Árdal, in contrast, tries to construct for Hume what he seems to have omitted—a philosophical rationale for his obvious interest in the indirect passions. Árdal starts by drawing attention to the role these passions play in Hume’s moral philosophy, in particular, his repeatedly connecting the indirect passions to the moral sentiments of approval and disapproval. Árdal concludes that Hume means to equate the moral sentiments with particular kinds of indirect passions. The first two Parts of Book II are of interest, on Ardal’s reading, because it is there that he shows us how moral sentimentalism can be founded on something more fully naturalistic than Hutcheson’s somewhat mysterious “moral sense.”4I argue against Árdal’s interpretation in §2. But this reopens the problem of accounting for Hume’s interest in the indirect passions. I offer my view in §§3–5 where, like Árdal, I provide a reconstruction of Hume’s discussion of these passions in order to show how it has an underlying philosophical motivation. My claim is that Hume relies on the indirect passions to explain how we form beliefs about persons as bearers of features that make them into who [End Page 470] they are. It is by feeling an indirect passion towards someone that we think of her as more than accidentally related to some quality, such as her country, her riches, her family, or even her character traits. In support of my interpretation I point to the many parallels Hume draws between the indirect passions and the associative mechanism he offers to explain our forming causal beliefs (I.iii). And I suggest that, just as Hume’s associative explanation of causal beliefs is necessitated by his scepticism about intrinsic “necessary connexions,” so also his associative mechanism for our beliefs about persons—the indirect passions—is necessitated by a certain kind of scepticism about persons. This is not the scepticism about persons that we find in “Of personal identity” (I.iv.6), where Hume argues against the view that our perceptions inhere in a simple soul; it is rather a scepticism about there being intrinsic features of persons that define them as who they are.But, before I explain in more detail what my claim amounts to, it will help to have available a brief description of the mechanism that Hume’s takes to explain the indirect passions.1. THE MECHANISM FOR THE INDIRECT PASSIONSA passion, for Hume, is a simple impression felt in response to various circumstances. Because of their simplicity, we cannot define passions by putting their characteristic feeling into words; instead, Hume thinks, we can only delineate “such circumstances, as attend them” (T 277). Passions are indirect if those circumstances include as an outcome the focusing of attention onto a person... (shrink)

Benefit/cost analysis is a technique for evaluating programs, procedures, and actions; it is not a moral theory. There is significant controversy over the moral justification of benefit/cost analysis. When a procedure for evaluating social policy is challenged on moral grounds, defenders frequently seek a justification by construing the procedure as the practical embodiment of a correct moral theory. This has the apparent advantage of avoiding difficult empirical questions concerning such matters as the consequences of using the procedure. So, for example, (...) defenders of benefit/cost analysis (BCA) are frequently tempted to argue that this procedurejust isthe calculation of moral Tightness – perhaps that what itmeansfor an action to be morally right is just for it to have the best benefit-to-cost ratio given the accounts of “benefit” and “cost” that BCA employs. They suggest, in defense of BCA, that they have found the moral calculus – Bentham's “unabashed arithmetic of morals.” To defend BCA in this manner is to commit oneself to one member of a family of moral theories (let us call thembenefit/cost moral theoriesorB/C moral theories) and, also, to the view that if a procedure is (so to speak) the direct implementation of a correct moral theory, then it is a justified procedure. Neither of these commitments is desirable, and so the temptation to justify BCA by direct appeal to a B/C moral theory should be resisted; it constitutes an unwarranted short cut to moral foundations – in this case, an unsound foundation. Critics of BCA are quick to point out the flaws of B/C moral theories, and to conclude that these undermine the justification of BCA. But the failure to justify BCA by a direct appeal to B/C moral theory does not show that the technique is unjustified. There is hope for BCA, even if it does not lie with B/C moral theory. (shrink)

The thesis of this book is that despite Freud's low opinion of philosophy and despite his claim that psychoanalysis avoids value judgements, psychoanalytic theory does contain a moral philosophy.

This textbook is a flexible and affordable collection of classic and contemporary primary sources in philosophy. The readings cover seven basic topics of Western Philosophy, and each one is carefully edited to be long enough to present a self-contained argument but not so lengthy that students lose track of the main point.

The state that we inhabit plays a significant role in shaping our lives. For not only do its institutions constrain the kinds of lives we can lead, but it also claims the right to punish us if our choices take us beyond what it deems to be appropriate limits. Political philosophers have traditionally tried to justify the state's power by appealing to their preferred theories of justice, as articulated in complex and wide-ranging moral theories—utilitarianism, Kantianism, and the like. One of (...) John Rawls's greatest contributions to political philosophy has been his recognition that this is the wrong way for this field to approach its task. He points to what he calls “the fact of reasonable pluralism,” which is the incontestable fact that in a free society people striving to lead their lives ethically will subscribe to conflicting moral and religious doctrines, many of which will be “reasonable” in the special sense of leaving their adherents willing to cooperate with those with whom they have moral disagreements. And this means that political philosophers can no longer rely on any particular “comprehensive” doctrine in their attempts to justify the state. For doing so would be unfair to those who subscribe to a conflicting reasonable doctrine; it would mean that the coercive power of the state would not be justified to them in terms they can accept, even while they were forced to abide by its terms. (shrink)

The article presents a new interpretation of Hume’s treatment of personal identity, and his later rejection of it in the “Appendix” to the Treatise. Hume’s project, on this interpretation, is to explain beliefs about persons that arise primarily within philosophical projects, not in everyday life. The belief in the identity and simplicity of the mind as a bundle of perceptions is an abstruse belief, not one held by the “vulgar” who rarely turn their minds on themselves so as to think (...) of their perceptions. The author suggests that it is this philosophical observation of the mind that creates the problems that Hume finally acknowledges in the “Appendix.” He is unable to explain why we believe that the perceptions by means of which we observe our minds while philosophizing are themselves part of our minds. This suggestion is then tested against seven criteria that any interpretation of the “Appendix” must meet. (shrink)

If a bit of perceptual behavior is a trope, so is any response to a stimulus, and so is the stimulus, and so therefore, more generally, is every effect and its cause. When we say that the sunlight caused the blackening of the film we assert a connection between two tropes; when we say that Sunlight in general causes Blackening in general, we assert a corresponding relation between the corresponding universals. Causation is often said to relate events, and generally speaking (...) any event is a trope: a smile, a sneeze, a scream, an election, a cold snap, a storm, a lightning flash, a conspiracy, perhaps a wave, and so on up to such big and important events that they have proper names, like the Passover and Lulu the H-bomb explosion. We have called a trope a "case" of its universal, while the universal is the "kind" of the trope, so it is no surprise that a medical "case" is a trope--in the sense, at any rate, in which a person is said to have a case of typhoid fever rather than to be a case of it. A high-school boy, uncoached, has assured me, "Of course there's such a thing as Redness--this pencil has a case of it." When a scientist reports a temperature or a velocity or a viscosity he is reporting a trope--not a universal, because it is a once-for-all occurrence, but not a concrete thing either, though doubtless a component of one. He is likely to call it an "aspect" of the thing or, preferably, a "state," and generally speaking a "state" of a thing or a nation is a trope. Recent developments in sub-atomic physics, a none too reliable oracle, suggest that an electron, e.g., just is an existent state, and that the common-sense philosophy of concreta here abdicates altogether in favor of the trope. (shrink)

Bioethicists have virtually assumed that Tarasoff generated a duty to warn the sexual partners of an HIV‐positive man that they risked infection. Yet given the views of sex and of AIDS that have evolved in the gay community, in many cases the parallels to Tarasoff do not hold. Bioethicists should at the least attend to the community's views, and indeed should go beyond doing mere “professional ethics” to participate in the moral self‐exploration in which these views are located.

This chapter contains section titled: Introduction Locke on Personal Identity Hume's Critique of Locke The Belief in Mental Unity Hume's Second Thoughts Some Interpretations Unity in Reflection References.

This textbook is a flexible and affordable collection of classic and contemporary primary sources in philosophy. The readings cover seven basic topics of Western Philosophy. The selections are long enough to present a self-contained argument but not so lengthy that students lose track of the main point. The book includes a glossary and an appendix on logic and argumentation.

This textbook is a flexible and affordable collection of classic and contemporary primary sources in philosophy. The readings cover seven basic topics of Western Philosophy. The selections are long enough to present a self-contained argument but not so lengthy that students lose track of the main point. Each reading has an outline with study questions, questions for reflection and discussion, and an annotated bibliography. The book includes a glossary and an appendix on logic and argumentation.

This textbook is a flexible and affordable collection of classic and contemporary primary sources in philosophy. The readings cover seven basic topics of Western Philosophy. The selections are long enough to present a self-contained argument but not so lengthy that students lose track of the main point. Each reading has an outline with study questions, questions for reflection and discussion, and an annotated bibliography. The book includes a glossary and an appendix on logic and argumentation.

Common-sense holds that morality requirespeople who know that they are infected with theHuman Immunodeficiency Virus (HIV) to disclosethis fact to their sexual partners. But manygay men who are HIV-positive do not disclose,and AIDS Service Organizations (ASOs) promotepublic-health policies based on safer sex byall, rather than disclosure by those who knowthat they are infected. The paper shows thatthe common-sense view follows from a minimalsexual morality based on consent. ASOs'seeming rejection of the view follows fromtheir need to take seriously widespreadweakness of will (...) in the realm of sexuality. The author argues that gay men take themselvesto follow the common sense view, but hold thatthe possibility of a partner's HIV infection isbackground information that need not bedisclosed for sexual consent. This suggestionis criticized. The paper concludes with aconsideration of HIV disclosure and sexualethics outside of the gay community and oflegal restrictions on the sexuality of theHIV-positive. (shrink)

In Hume's True Scepticism, I offer a new interpretation of David Hume's epistemology and philosophy of mind as presented in A Treatise of Human Nature.1 I approach this task by developing what I take to be the first comprehensive2 investigation of Part 4 of Book 1. The arguments Hume offers there have frequently been addressed by the secondary literature in a piecemeal fashion, especially his account of personal identity and of our belief in the external world. But I argue in (...) HTS that they should be read as a sustained investigation of the human temptation to form philosophical systems. Consider its title: "Of the sceptical and other systems of philosophy". Hume, I suggest, is... (shrink)

I owe thanks to Annemarie Butler, Jonathan Cottrell, and Barry Stroud for their thoughtful criticism of my interpretation in Hume's True Scepticism of David Hume's epistemology and philosophy of mind as presented in A Treatise of Human Nature.1 Butler focuses on my account of the mental mechanisms Hume provides for our everyday beliefs about external objects. She also challenges my appeal to what Hume calls "secondary" ideas in my explanation of Humean introspection. Cottrell raises questions about my interpretation of perceptions (...) generally, both introspective and non-introspective, as well as my understanding of Hume's conflicted statements about... (shrink)

Contractarians view justice as being defined by a contract made by rational individuals. No one supposes that this contract is actual, and the fact that it is merely hypothetical raises a number of questions both about the assumptions under which it would be actual and about the force of hypothetical agreement that is contingent on these assumptions.Particular contractarian theories must specify the circumstances of the agreement and the endowments, beliefs, desires, and degree and type of rationality of the agents. How (...) these issues are settled determines the force of the hypothetical agreement. The fact that ignorant people who desired only universal suffering would, under duress, agree to a certain principle gives us no reason to believe the principle is a correct moral principle or to think it rational to accept or act on it: some counterfactual assumptions undermine entirely the moral force of hypothetical agreement. On the other hand, to take people just as they are, with their current beliefs, desires, endowments, and all, is to endorse their ignorance and mistakes as well as any previous injustice that affects their bargaining power. (shrink)

The U.S. Supreme Court regards parental rights as fundamental. Such a status should subject any legal procedure that directly and substantively interferes with the exercise of parental rights to strict scrutiny. On the contrary, though, despite their status as fundamental constitutional rights, parental rights are routinely suspended or revoked as a result of procedures that fail to meet even minimal standards of procedural and substantive due process. This routine and cavalier deprivation of parental rights takes place in the context of (...) divorce where, during the pendency of litigation, one parent is routinely deprived of significant parental rights without any demonstration that a state interest exists—much less that there is a compelling state interest that cannot be achieved in any less restrictive way. In marked contrast to our current practice, treating parental rights as fundamental rights requires a presumption of joint legal and physical custody upon divorce and during the pendency of divorce litigation. The presumption may be overcome, but only by clear and convincing evidence that such an arrangement is harmful to the children. (shrink)

Gauthier's version of the Lockean proviso (in Morals by Agreement) is inappropriate as the foundation for moral rights he takes it to be. This is so for a number of reasons. It lacks any proportionality test thus allowing arbitrarily severe harms to others to prevent trivial harms to oneself. It allows one to inflict any harm on another provided that if one did not do so, someone else would. And, by interpreting the notion of bettering or worsening one's position in (...) terms of subjective expected utility, it allows immoral manipulation of others and imposes unwarranted restrictions based on preferences that should carry no moral weight. (shrink)

My main thesis is that the necessary and its necessity are factual, or matters of fact, in the sense that they are realities on the same ontic plane or planes with any other beings there may be, physical, phenomenal, or Platonically transcendent, and are no more creatures of thought and speech than dogs and gravity are; if I think they are all physical actualities, this is only because I think everything is. I have a second thesis, however, which is that (...) the realities objectively characterized by necessity are "facts" in the more special sense in which we say it is a fact that the earth is round but not that the earth is a fact or that roundness is a fact. It is fashionable to declare that necessity and contingency pertain only to statements, judgments, or "propositions"; and though the popularity of this is due, I am afraid, to what is false in it, namely, its subjectivism, its philosophic force is due to a covert truth, that necessity can qualify nothing short of the states of affairs which make statements or judgments necessarily true. Any shifts that can avoid the admission of facts in general as first-class members of the universe can provide for what I shall say of necessary facts, but meanwhile the worth of the category will be so proving itself that I cannot foresee abandoning it, and it is all I shall be meaning hereinafter by the word "facts.". (shrink)

Though most children can easily answer the question, "Who's your daddy?", the concept of paternity is complex and multifaceted. Courts have stumbled in answering it. In order to ground paternal rights and obligations in a satisfactory way, we need to disaggregate the various elements of stereotypical paternity. It is not sufficient merely to separate social from biological paternity. The latter concept, itself, is complex. We need to separate the procreative element of paternity from the genetic relationship.

Standards of reasonability play an important role in some of the most difficult cases of rape. In recent years, the notion of the reasonable person has supplanted the historical concept of the reasonable man as the test of reasonability. Contemporary feminist critics like Catharine MacKinnon and Kim Lane Scheppele have challenged the notion of the reasonable person on the grounds that reasonability standards are gendered to the ground and so, in practice, the reasonable person is just the reasonable man in (...) a gender neutral guise. These critics call for the explicit employment of a reasonable woman standard for application to the actions of female victims of rape. But the arguments for abandoning a gender-neutral standard are double-edged and the employment of gendered standards of reasonability is likely to have implications that are neither foreseen by, nor acceptable to, advocates of such standards. Reasonable agent standards can be dropped, in favor of appeals to the notion of a reasonable demand by the law. However, if reasonable agent standards are to be retained, gendered versions of such standards are not preferable to gender-neutral ones. (shrink)

This article explains Aquinas's attempt to show, within an Aristotelian framework, how the soul can be both a substance in its own right and the form of the body. I argue that although Aquinas' theory is logically consistent, its plausibility is weakened by the fact that it requires a significant modification of the Aristotelian conceptions of both substance and form.