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This chapter examines Aquinas’s doctrine of divine simplicity, situating it within the broader landscape of classical theism in contrast to theistic personalism. After outlining Aquinas’s conviction that while God’s existence can be demonstrated, God’s essence remains incomprehensible, the discussion turns to Summa Theologiae, 1a, 3, where Aquinas denies that God is composite in any respect. He argues that God is not a body, nor composed of form and matter, essence and existence, substance and accidents, or genus and difference. Instead, God is pure actuality, identical with his essence and existence, and thus utterly simple. The chapter compares these claims with parallel treatments in the Sentences, Summa Contra Gentiles, and Compendium Theologiae. Finally, it surveys modern objections – particularly from Alvin Plantinga, Richard Swinburne, and others – that divine simplicity undermines God’s personhood, freedom, or responsiveness. The chapter concludes that many such criticisms misrepresent Aquinas, who presents simplicity chiefly as a way of ruling out what God cannot be.
Aquinas argues that, abstracting from divine revelation, God's existence can be argued for successfully, and that God is the source of the existence of all that is not divine for as long as it exists. His philosophical thought about God has been seminal for later thinkers, but can be hard to grasp as it is scattered across a broad range of his writings. This book provides a comprehensive and accessible single-volume account of Aquinas's philosophy of God which also evaluates it in the light both of various criticisms that have been made of it, and of philosophical thought more generally. It situates Aquinas's thinking about God in relation to major philosophers of the past and a number of important philosophers writing today, which will enable readers to understand Aquinas's philosophy of God in the context of centuries of philosophical thought.
In this article, I invite readers to think about what it really means to taste life. I intend this to be an opening to a broader conversation about what it means to be virtuous, to flourish collectively, and even to experience transcendence. Guiding the reader through various existential views and scenarios, I explore the potential to transform both our lives and the fabric of our shared reality. Living such a life entails far more than a mundane and restrained biological, functional existence. In short, we need not ‘merely exist’; we can exist more.
Two forms of existential proposition are identified, one favoured by analytical philosophers, one by Thomists. It is argued, against objections, that both forms were recognized and used by Thomas. A useful way of labelling this point is to speak of the distinction between esse ut verum and esse reale: being in the sense of the true, the analytical notion, on the one hand, and the Thomist notion of actual or real existence on the other. The former is best expressed by a second-level predicable, the latter by a first-level predicable. Both express a valid notion which is fittingly called ‘existential’, and both are, indeed, analogically connected in meaning.
In the second volume of his Systematic Theology, William Lane Craig raises a number of issues against the traditional doctrine of divine simplicity, along with several criticisms of Aquinas’s notion of existence. We can’t respond to all of his complaints here – but we can respond to what are, in our estimation, the most fundamental to his case.
Our focus will be on two of the main problems he presses against Aquinas’s view of existence: first, whether it makes sense to talk about existence itself as existing; and second, whether existence comes in degrees. These challenges are closely related – both, ultimately, concern the classical theist claim that God is identical to His own existence – and so our answers will be related as well.
We introduce and analyse a variant of the Becker–Döring equations that models the growth of clusters through the gain or loss of monomers. Motivated by enzymatic reactions in biology, this model incorporates irreversible fragmentation and monomers injection. We establish the well-posedness of the equations under suitable conditions on the kinetic rates. Then, as in the Becker–Döring equations, we distinguish two cases for the long-time behaviour of our solution; however, the distinction is made from the constant rate injection of monomers. While under strong fragmentation rate the system may exhibit infinite steady states, we prove that for low injection rate and moderate fragmentation, the solution converges locally exponentially fast to the steady state. Finally, we present an efficient scheme that preserves the asymptotic and allows fast computation by sub-sampling the clusters.
This chapter will examine the main questions people have meant to ask when they ask, “Why is there something rather than nothing?” I will then turn to articulate the interpretation of the Question that most interests me, and the one with which I will be concerned for the remainder of the book: Why does anything whatsoever exist? This question will be made more precise and will be distinguished from superficially similar questions (e.g., “Why does the world exist?”). I will argue that the question “Why does anything whatsoever exist?” is meaningful, substantive, legitimate, and worth pursuing.
This article articulates and defends an argument for pantheism which has not featured prominently in contemporary philosophy of religion but which is rooted in foundational ideas defended by pantheists and by non-pantheistic theists. It is inspired in part by the idea advocated by some theists that God is existence itself, and in part by the idea associated with pantheistic thinkers such as Śaṅkara that the universe is the “way” that fundamental existence is. Moreover, it is motivated by a simple and attractive view about God’s fundamental nature which might be shared by pantheists and non-pantheists according to which God is the asymmetric source of all else. Beginning from this view about God’s fundamental nature, it argues that God is existence. It then contends that there is therefore a clear and robust sense in which the universe “is” God, since the universe is the “way” existence is.
Samuel Lebens argues that we may understand God’s act of creation by analogy with an author’s creation of fictional characters. I argue that, in the relevant sense of ‘fictional characters’, authors do not create such beings; rather, they invite us to imagine that such beings exist. I also argue that Lebens’s view would make authorship morally problematic in implausible ways. Along the way I briefly offer an account of the being of fictional characters and consider the relations between truth-in-fiction and truth.
We study the well-posedness of solutions to the general nonlinear parabolic equations with merely integrable data in time-dependent Musielak–Orlicz spaces. With the help of a density argument, we establish the existence and uniqueness of both renormalized and entropy solutions. Moreover, we conclude that the entropy and renormalized solutions for this equation are equivalent. Our results cover a variety of problems, including those with Orlicz growth, variable exponents and double-phase growth.
One of the sciences comprised in Hume’s Science of Human Nature is metaphysics, understood as the science of the most general features of the world as it appears to us. I show how Hume’s metaphysics in the Treatise can be “methodized, or reduced to general principles.” Those principles are: (I) The Contradiction Principle: The distinctly conceivable implies no contradiction. (II) The Possibility Principle: What implies no contradiction is possible. (III) The Conceptual Separability Principle: Things are different if and only if separable in conception. On these principles the rest of Hume’s metaphysics is based, including his atomistic ontology and his denial of necessary connection: only single, individual, simple, unaltering, determinate, particular, metaphysically independent things exist.
This theoretical paper responds to concerns surrounding the fracturing and opaqueness of the term “sustainability” and the related metaphysical crisis that underpins an existential polycrisis. Drawing on Nietzsche’s work on order and disorder (1873, 1901), Latour’s (2013) philosophical anthropology of modernity and Rosa’s (2019) theory of resonance, the author proposes a way of considering sustainability pluralistically, as a crucial mode of existence amongst others. Revisiting the dualism of subject/object, the author proposes a more implicated, associative way of viewing how humans and non-humans relate, introducing the term sobject: interpolated, entangled being(s). As this mode of existence is explicated, the paper articulates how this could be useful in an educational sense. What is proposed is a way to “zone in” to sustainability with students; a mode through which we can learn to see our connections to and within the world, through which we can actively renew the many-pronged path of Earthly existence. Authentic transformation of dysfunctional existence on Earth, this paper argues, will not arise from harmony or consensus but from engaging the generative dissonances through which we might move beyond perpetual reconsideration of “sustainability” towards the active reconfiguration of how we live, learn and co-create a more inhabitable world.
In this article, we study the $L_p$ Gauss image problem for C-pseudo-cones, where C is a pointed closed convex cone in $\mathbb {R}^n$ with vertex at the origin and having nonempty interior. We first establish the existence of solutions for a Borel measure supported on compact subsets, and then prove a general existence theorem for $p>0$ via approximation. In addition, we prove a uniqueness theorem for $p<0$ under appropriate assumptions.
The central component of Suárez’s account of time in DM 50.8-11 is the metaphysical notion of duration understood as permanence in existence and as belonging to every real being in its actual existence. Suárez associates different kinds of duration with the different modes of existence displayed by real beings. The mode of existence relevant to time is that of successive beings: time is the duration of successive things, that is, of change. Suárez’s ambitious project is to offer a “metaphysical deduction” of time from the notion of duration. In this paper I analyze two fundamental aspects of this project: the existence of time and its real identity with change. Suárez emphasizes that both the existence of time and its identity with change can be deduced from general properties of duration. However, he is also very much concerned to show that this deduction does not miss specific features of time.
where $\alpha,\beta$ are real parameters, $n \gt 2,\, q \gt k\geqslant 1$ and $S_k(D^2v)$ stands for the k-Hessian operator of v. Our results are based mainly on the analysis of an associated dynamical system and energy methods. We derive some properties of the solutions of the above equation for different ranges of the parameters α and β. In particular, we describe with precision its asymptotic behaviour at infinity. Further, according to the position of q with respect to the first critical exponent $\frac{(n+2)k}{n}$ and the Tso critical exponent $\frac{(n+2)k}{n-2k}$ we study the existence of three classes of solutions: crossing, slow decay or fast decay solutions. In particular, if k > 1 all the fast decay solutions have a compact support in $\mathbb{R}^n$. The results also apply to construct self-similar solutions of type I to a related nonlinear evolution equation. These are self-similar functions of the form $u(t,x)=t^{-\alpha}v(xt^{-\beta})$ with suitable α and β.
Kierkegaard’s book Repetition, along with his descriptions of the book in Concluding Unscientific Postscript, offer a more positive characterization of thought experiments than we find in earlier works. This chapter argues that imaginary construction has a positive aim of identifying underlying continuities. I identify some similarities between Ørsted’s pursuit of invariants and Kierkegaard’s. One new addition in Kierkegaard’s discussions is the role of exceptions. An exception is a case that falls outside a rule without breaking it. Exceptions can neither establish a rule nor refute its necessity, but they can turn attention to the principles and their limits as well as further determine their scope and content. A further similarity between Kierkegaard’s work and Ørsted’s is the fact that variation must be active and free.
Many scholars argue that Ockham is ontologically committed to non-present temporalia. Often, that claim is defended by an appeal to Ockham’s account of the truth conditions for tensed propositions, which these scholars argue entails that a true tensed proposition presupposes non-present temporalia. I argue, however, that the truth conditions that Ockham provides for tensed propositions entail no such thing. For, according to the account that Ockham provides, a tensed proposition is true just in case some equivalent present-tense proposition was (will be) true. A present-tense proposition is ontologically committing only when it is true, however, and, at those times at which it is true, the things it presupposes are presently existing things, not non-present temporalia. Consequently, the claim that Ockham is committed to non-present temporalia cannot be defended by appeal to his account of the truth conditions for tensed propositions.
Classical logic assumes that names are univocal: every name refers to exactly one existing individual. This Principle of Univocality has two parts: an existence assumption and a uniqueness assumption. The existence assumption holds that every name refers to at least oneindividual, and the uniqueness assumption states that every name refers to at most one individual. The various systems of free logic which have been developed and studied since the 1960s relax the existence assumption, but retain the uniqueness assumption. The present work investigates violations of both halves of the Principle of Univocality. That is, whereas the free logics developed from the 1960s are called 'free' because they are free of existential assumptions, the current Element generalizes this idea, to study logics that are free of uniqueness assumptions. We explore several versions of free logic, comparing their advantages and disadvantages. Applications of free logic to other areas of philosophy are explored.
Meinongianism (named after Alexius Meinong) is, roughly, the view that there are not only existent but also nonexistent objects. In this book, Meinong's so-called object theory as well as “neo-Meinongian” reconstructions are presented and discussed, especially with respect to logical issues, both from a historical and a systematic perspective. Among others, the following topics are addressed: basic principles and motivations for Meinongianism; the distinction between “there is” (“x”) and “exists” (“E!”); interpretations and kinds of quantification; Meinongianism, the principle of excluded middle and the principle of non-contradiction; the nuclear-extranuclear distinction and modes of predication; varieties of neo-Meinongianism and Meinongian logics.