I argue that Democritus presents a theory of colour in which the predominance of atomic shapes and microstructural arrangements are neces- sary but not sufficient for colour vision. Focusing primarily on Democritus’ basic colours, I analyse his microstructural account, providing a new analysis of the natural and technological underpinnings of his method of explanation. I argue that the notion of predominance allows Democritus to account for both the varia- tion and the repeatable correspondence of colour perception by setting limits on (...) possible microstructures. This account, however, is complicated by the evidence for a Democritean theory of colour transformation and distorted vision, which arise from a dynamic interplay of features at the level of microstructures and at the level of perception. (shrink)

I argue that Democritus presents a theory of colour in which the predominance of atomic shapes and microstructural arrangements are necessary but not sufficient for colour vision. Focusing primarily on Democritus’ basic colours, I analyse his microstructural account, providing a new analysis of the natural and technological underpinnings of his method of explanation. I argue that the notion of predominance allows Democritus to account for both the variation and the repeatable correspondence of colour perception by setting limits on possible microstructures. (...) This account, however, is complicated by the evidence for a Democritean theory of colour transformation and distorted vision, which arise from a dynamic interplay of features at the level of microstructures and at the level of perception. (shrink)

Epicurus' "On Nature" 25 is the key text for anti-reductionist interpretations of Epicurus' philosophy of mind. In it, Epicurus is trying to argue against those, like Democritus, who say that everything occurs 'of necessity,' and in the course of this argument, he says many things that appear to conflict with an Identity Theory of Mind and with causal determinism. In this paper, I engage in a close reading of this text in order to show that it does not contain any (...) clear statement of either a doctrine of radically emergent properties and "downwards causation" (contra David Sedley) or of the non-reducibility of the mental to the atomic (contra Julia Annas). I argue that Epicurus' main thesis is that we cannot consistently argue against our conception of ourselves as rational agents, and that it is our reason that allows us to reform our characters, control our actions, and blame and praise one another appropriately. The way that Epicurus describes the development and causal efficacy of reason in "On Nature" book 25 is consistent both with reductionism and (more surprisingly) with causal determinism. (shrink)

In Epicurean cosmology, material reconstitution, or palingenesis (παλιγγενεσία) is the necessary consequence of the infinity of time and the eternity of atoms. I examine Lucretius’ treatment of this phenomenon (DRN 3.843–864) and consider the extent to which his view enables us to develop an Epicurean response to the question: what makes a person at two different times one and the same person? I offer a reading of this passage in the light of modern accounts of persistence and identity, and what (...) Lucretius states in Books 3 and 4 about memory and the soul’s motions. Guided by the metaphysical implications of this analysis, I determine the type of relation which, according to Lucretius, holds between the mental and the physical. (shrink)

I argue that sunyata, or something like it, manifested itself in early Western thought. While Plato and Aristotle resisted emptiness or nothingness, they nevertheless felt themselves obliged to venture close to its edge in order to ground their explanations of changing reality to unchanging principles. These principles embody much of the indeterminancy long associated with the Mahayana understanding of sunyata. Although their function was to enable lasting explanations of reality by putting change out of play, they themselves shade off toward (...) a featureless being evocative of non-being. Moving along a somewhat different track, Greek atomists embraced emptiness so as to permit self-existent, fully self-contained atoms to move about. In their system, non-being, a foundational principle of reality, paradoxically coexists with being. Interestingly, modern science has undone the self-containment of atoms—emptied them of properties once thought to be innate—and thereby removed yet another Western safeguard against change. It seems that change cannot be put out of play, though it does slope off toward sunyata-like emptiness. (shrink)

Commentators usually understand the Epicureans to take friends and friendship to be worthwhile because they help us to eliminate and/or manage our bodily and/or mental pains and thus come closer to achieving tranquility. However, this understanding leaves unexplained why friends and friendship might be worthwhile to an advanced Epicurean with few or no pains to manage or eliminate. In this paper, I remedy this deficiency by offering three explanations for why friends and friendship could and maybe would remain worthwhile even (...) to the Epicurean who achieves tranquility. Along the way, I explore some problems with each explanation and consider ways to overcome them. Notwithstanding these problems, I conclude that friends and friendship could and perhaps would be worthwhile even to the Epicurean with few or no pains. (shrink)

In this paper an outline of a metaphysical conception of modern science is presented in which a fundamental distinction is drawn between scientific principles, laws and theories. On this view, ontologicalprinciples, rather than e.g. empirical data, constitute the core of science. The most fundamental of these principles are three in number, being, more particularly (A) the principle of the uniformity of nature, (B) the principle of the perpetuity of substance, and (C) the principle of causality.These three principles set basic constraints (...) on the methodology of both empirical and theoretical science. The uniformity principle is central to the empirical aspect of science, suggesting a methodology consisting in the attempt to discover empiricallaws, while the causality principle is central to the theoretical aspect of science, suggesting the postulation of scientifictheories capable of indicating the causal basis of the laws. And the perpetuity principle functions so as to form a bridge between the theories and the laws. (shrink)

Sextus Empiricus ascribes to Epicurus a curious account of truth and falsehood, according to which these characteristics belong to things in the world about which one speaks, not to what one says about them. I propose an interpretation that takes this account seriously and explains the connection between truth and existence that the Epicureans also seem to recognise. I then examine a second Epicurean account of truth and falsehood and show how it is related to the first.

The relationship between Epicurus and Nietzsche is an increasingly popular research topic. There are a number of publications that attempt to detail the nature of this relationship by investigating specific aspects of their writings that interrelate. Such research is valuable because it reveals an otherwise hidden dynamic to Nietzsche studies, however, all previous discourse on Epicurus and Nietzsche are limited because they fail to recognise both thinkers as philosophers of immanence. This thesis proposes that ‘immanence’ is the central concept that (...) allows the influence of Epicurus upon Nietzsche’s thought to be revealed most appropriately. Furthermore, it proposes to account for the development of ‘immanence’ within the works of Epicurus and Nietzsche in order to disclose the nature of immanence itself. By following Nietzsche’s genealogical method, this thesis will demonstrate that Epicurean immanence emerged through the conceptualisation of all existence within the cosmos and nature. Moreover, immanence developed as an atomistic response to the transcendent philosophies of Socrates and Aristotle which opposed Democritean materialism. Nietzsche recognised that the increasing popularity of Platonism in late antiquity led to the event of Christianity, which dominated Western thought until its success eventually destroyed the conditions that maintained it. Nietzsche predicted that in the light of Christianity’s demise, mankind would be plunged into a state of crisis and unparalleled nihilism. In response, he proposed that the body and spirit must be reunited in an act of overcoming, and those capable of that act would ‘inherit the earth’. Immanence for Nietzsche is this unifying act and inheritance, and he demonstrates that redemptive doctrines such as Epicurus’ ataraxia, modelled on nihilism, must be rejected and overcome by a philosophy modelled on ‘cheerfulness’. It is in this respect that his philosophy from The Gay Science onwards can be recognised as a discourse on immanence. (shrink)

The author makes an introduction to non-standard analysis, then extends the dialectics to “neutrosophy” – which became a new branch of philosophy. This new concept helps in generalizing the intuitionistic, paraconsistent, dialetheism, fuzzy logic to “neutrosophic logic” – which is the first logic that comprises paradoxes and distinguishes between relative and absolute truth. Similarly, the fuzzy set is generalized to “neutrosophic set”. Also, the classical and imprecise probabilities are generalized to “neutrosophic probability”.

I develop a positive interpretation of Democritus' theory of agency and responsibility, building on previous studies that have already gone far in demonstrating his innovativeness and importance to the history and philosophy of these concepts. The interpretation will be defended by a synthesis of several familiar ethical fragments and maxims presented in the framework of an ancient problem that, unlike the problem of free will and determinism, Democritus almost certainly did confront: the problem of the causes of human goodness and (...) success. I will argue that Democritus' account of the virtues and success is naturally interpreted as an intellectualist one. His focus on our intellectual powers as the source of our own agency and cause of our success led him to remarkable breakthroughs in moral psychology, including the development of a kind of cognitive-behavioral therapy for stress and anxiety, and the proposal of an autonomous source of moral sanction. (shrink)