Recent arguments in plant biology that claim to be uncovering the scientific basis for sentience in plants are grounded on assumptions that have not been sufficiently scrutinized. This paper focuses on two assumptions in particular – the semantic assumption that psychological predicates are non-rigid and hence can be extended to plants, and the assumption that Darwinian gradualism is inconsistent with consciousness emerging at a specific place on the phylogenetic tree. We interrogate both assumptions, advocating that a careful semantic (...) analysis of psychological predicates does not warrant their extension to plants on the available evidence, and that gradualism and emergentism, properly construed, are not inconsistent. (shrink)

Integrated information theory (IIT) is a candidate theory of consciousness that highlights the role of complex interactions between parts of a system as the basis of consciousness – and, due to its general information-theoretic formulation, is capable of making statements about consciousness in neural and non-neural systems alike. Here, we argue that a system radically different to a human brain, host to complex physiological and functional structures capable of integrating information, can be found in the meristems and vascular system of (...) higher plants. Following a pragmatic and ontologically innocent approach, neither taking for granted that plants are conscious nor dismissing the possibility that they are, we argue that the time is ripe to apply analysis tools inspired by IIT to plants, taking advantage of recent developments in both plant imaging and information theory. We introduce and discuss the relevant literature, and pro information and integration in plant behaviour, assessing the plausibility of plant sentience. If successful, these experiments could position plants as the next frontier in consciousness science, and urge us to rethink our perspectives on consciousness, how to measure it, and its prevalence amongst living beings. (shrink)

The attribution of sentience or consciousness to plants is currently a topic of debate among biologists and philosophers. The claim that plants are conscious is based on three arguments: (i) plants, like all living organisms, are sentient (biopsychism); (ii) there is a strong analogy between the phloem transport system of plants and the nervous system of animals; and (iii) plants are the cognitive equals of sentient animals. On the basis of a model of consciousness that spells out criteria for (...) assigning sentience to a living organism and presents a diagnostic evolutionary marker of consciousness, we argue that these arguments are flawed and discuss some of the ethical issues they raise. (shrink)

The defining principle of evolutionary biology is that all species, extant and extinct, evolved from ancient prokaryotic cells. Their initial appearance and adaptive evolution are proposed to have been accompanied by a cellular sentience, by feelings, subjectivity or, in a word, 'consciousness'. Prokaryotic cells, such as archaea and bacteria, have natural unitary, valence-marked 'mental' representations. They process and evaluate sensory information in a context-dependent manner. They learn, establish memories, and communicate using biophysical fields acting on excitable membranes. Symbiotic eukaryotic (...) cells, which evolved much later, initiated a compound cellular subjectivity utilizing 'senomic' and 'ephaptic' principles that evolved into the varieties of consciousness seen in multicellular species. This Cellular Basis of Consciousness (CBC) model provides a novel framework within which to approach fundamental issues such as the origins of life and the emergence of mind. (shrink)

The study of plant signaling and behaviour, whose aim is to address the physiological basis for adaptive behaviour in plants, is a growing and thought-provoking field of research. In this review we discuss relevant studies that try to interpret in a neurocognitive fashion cases in which plants seem to behave similarly to animals. By comparing observations and experiments about plants and animals, we propose a framework composed of three axes in which interactions of living organisms with the world can (...) be represented. The first axis refers to adaptiveness, the second to sensitivity, and the third to sentience. This model allows us to interpret the behaviours of living organisms along a continuum capable of giving a smooth transition from simple to complex responses. In light of this, plants show an excellent adaptiveness, a variable level of sensitivity, and a good degree of sentience (restricted to the immediate perception that something is happening to themselves). Only the organisms with a high degree of sentience can have the basis for developing consciousness. However, even though it is necessary for consciousness, sentience is not sufficient, as it must be associated with a complex functional organization of structures that can support a recursive and synchronized processing of information. So far, plants have been found to completely lack this type of organization. Plants appear to be, therefore, sentient but not conscious. (shrink)

Environmental philosophers are often concerned to show that non-sentient things, such as plants or ecosystems, have interests and therefore are appropriate objects of moral concern. They deny that mentality is a necessary condition for having interests. Yet they also deny that they are committed to recognizing interests in things like machines. I argue that either machines have interests (and hence moral standing) too or mentality is a necessary condition for inclusion within the purview of morality. I go on to argue (...) that the aspect of mentality necessary for having interests is more complicated than mere sentience. (shrink)

I reconsider Aristotle’s account of perception by way of an ‘organic’ reading of the sensitive mean. I argue that the mean serves as a homeostatic mechanism that allows for the replication of forms in the organs in the process of perceptual alteration. The mean, as a product of properly constituted organs, is that by which Aristotle separates animals from plants.

In the last two decades, there has been a blossoming literature aiming to counter the neglect of plant capacities. In their recent paper, Miguel Segundo-Ortin and Paco Calvo begin by providing an overview of the literature to then question the mistaken assumptions that led to plants being immediately rejected as candidates for sentience. However, it appears that many responses to their arguments are based on the implicit conviction that because animals have far more sophisticated cognition and agency than (...) plants, and that plants should not have the same moral status as animals, plants should not have any moral status. Put in simpler terms: it is not as bad to eat plants than to eat, say, pigs. While there are still uncertainties around comparative moral and policy implications between animals and plants, given a gradualist account of quasi-sentience and partial moral status, both of which we claim are a matter of degree, we may not have to abolish our convictions by declaring that plants have no sentience or moral status at all. Indeed, we can hold two things at the same time: that animals and plants have moral status, but animals have prima facie more moral status than plants. (shrink)

A stimulating introduction to central issues of political theory, including liberty, rights and the state, and the claims of need and politics.

Simone Weil (1909-1943) was one of the most original philosophers & political thinkers of this century. Coming to Christianity late in her short life, she offered a refreshing creativity & a rare ability to confront theological complacencies. In introducing her writings & thoughts, this book emphasizes her never-ending search for truth, a search that epitomizes twentieth-century spirituality.

A short book combining extracts from the work of one of the world's greatest thinkers with commentary from one of Britain's most distinguished writers on philosophy.

There are long-standing doubts about whether data from subjective scales—for instance, self-reports of happiness—are cardinally comparable. It is unclear how to assess whether these doubts are justified without first addressing two unresolved theoretical questions: how do people interpret subjective scales? Which assumptions are required for cardinal comparability? This paper offers answers to both. It proposes an explanation for scale interpretation derived from philosophy of language and game theory. In short: conversation is a cooperative endeavour governed by various maxims (Grice 1989); (...) because subjective scales are vague and individuals want to make themselves understood, scale interpretation is a search for a focal point (Schelling 1960). A specific focal point it hypothesised; if this hypothesis is correct, subjective data will be cardinally comparable. Four individually necessary and jointly sufficient conditions for cardinal comparability are specified. The paper then argues this hypothesis can be empirically be tested, makes an initial attempt to do so using subjective well-being data, and concludes it is supported. Numerous areas for further research are identified including, at the end of the paper, how certain tests could be used to ‘correct’ subjective data if they are not cardinal. (shrink)

While life satisfaction theories (LSTs) of well-being are barely discussed in philosophy, they are popular among social scientists and wider society. When philosophers have discussed LSTs, they are taken to be a distinct alternative to the three canonical accounts of well-being—hedonism, desire theories, the objective list. This essay makes three main claims. First, on closer inspection, LSTs are indistinguishable from a type of desire theory—the global desire theory. Second, the life satisfaction/global desire theories are the only subjectivist accounts of well-being (...) in the sense that they maintain individuals decide what makes their lives go well for them; hedonism and other desire theories are subjectivist only in some alternative senses. Third, subjectivism is implausible, although for different reasons from those that are usually given. I examine what I take to be the two main current objections to LSTs and argue that they are unproblematic. I then raise two different, challenging objections. The first is novel. The second has been noted in passing, but its seriousness underestimated. I close by sketching some non-obvious difficulties that subjectivists will face if they attempt to show rival objectivist theories suffer even more counterintuitive implications. Although subjectivism has a strong intuitive pull, we should be ready to abandon it in favour of an objectivist theory—although it is not my purpose here to say which one. (shrink)

In "Culture and Value" Wittgenstein remarks that the truly "religious man" thinks himself to be, not merely "imperfect" or "ill," but wholly "wretched." While such sentiments are of obvious biographical interest, in this paper I show why they are also worthy of serious philosophical attention. Although the influence of Wittgenstein's thinking on the philosophy of religion is often judged negatively (as, for example, leading to quietist and/or fideist-relativist conclusions) I argue that the distinctly ethical conception of religion (specifically Christianity) that (...) Wittgenstein presents should lead us to a quite different assessment. In particular, his preoccupation with the categorical nature of religion suggests a conception of "genuine" religious belief which disrupts both the economics of eschatological-salvationist hope, and the traditional ethical precept that "ought implies can." In short, what Wittgenstein presents is a sketch of a religion without recompense. (shrink)

Philosophy is one of the most intimidating and difficult of disciplines, as any of its students can attest. This book is an important entry in a distinctive new series from Routledge: "The Great Philosophers." Breaking down obstacles to understanding the ideas of history's greatest thinkers, these brief, accessible, and affordable volumes offer essential introductions to the great philosophers of the Western tradition from Plato to Wittgenstein.In just 64 pages, each author, a specialist on his subject, places the philosopher and his (...) ideas into historical perspective. Each volume explains, in simple terms, the basic concepts, enriching the narrative through the effective use of biographical detail. And instead of attempting to explain the philosopher's entire intellectual history, which can be daunting, this series takes one central theme in each philosopher's work, using it to unfold the philosopher's thoughts. (shrink)

There is a world-wide debate at the moment about the appropriate role for the state in modern societies in the light of the world financial crisis. This book provides a comprehensive analysis and critique of Neo-liberal or economic liberal ideas on this issue.

Grondin situates Gadamer's concerns in the context of traditional philosophical issues, showing, for example, how Gadamer both continues and significantly modifies Descartes' approach to the philosophical problem of method and advances rather than simply follows Heidegger's treatment of the relationship of thinking to language. In doing this Grondin shows that the issues of philosophical hermeneutics are relevant to contemporary concerns in science and history.

Widespread and lasting consensus has not been philosophy's fate. Indeed, one of philosophy's most striking features is its ability to accommodate “not only different answers to philosophical questions” but also “total disagreement on what questions are philosophical” (Rorty 1995, 58). It is therefore hardly surprising that philosophers' responses to this metaphilosophical predicament have been similarly varied. This article considers two recent diagnoses of philosophical diversity: Kornblith and Rescher (respectively) claim that taking philosophical disagreement seriously does not lead to metaphilosophical scepticism. (...) The article argues that their confidence is misplaced in so far as both wrongly assume that ordinary, first-order philosophical practice and second-order metaphilosophical reflection are separate enterprises. We can say that the universe consists of a substance, and this substance we will call “atoms,” or else we will call it “monads.” Democritus called it atoms. Leibniz called it monads. Fortunately, the two men never met, or there would have been a very dull argument. (Allen 1997, 171) When will philosophers learn to be less pretentious and arrogant in their claims? One would imagine that the philosophic experiences of twenty-five centuries would have taught them the fallacy of self-esteem! (Schilpp 1935, 233). (shrink)

Mark Dooley has recently argued (principally against Simon Critchley) that the attempt to establish too strong a ‘connection’ between Jacques Derrida and Emmanuel Levinas not only distorts crucial disparities between their respective philosophies, it also contaminates Derrida’s recent work with Levinas’s inherent ‘political naivety’. In short, on Dooley’s reading, Levinas is only of ‘inspirational value’ for Derrida. I am not concerned with defending Critchley’s own reading of the ‘Derrida–Levinas connection’. My objective is rather to demonstrate, first, the way in which (...) Dooley’s argument hinges upon a misreading of Levinas and Derrida, and, second, why Derrida’s recent thinking is in fact fundamentally Levinasian. Key Words: contingency • guilt • Holocaust • hospitality • institutions • nature • suffering • third party • violence. (shrink)

In Culture and Value Wittgenstein remarks: ‘Thoughts that are at peace. That's what someone who philosophizes yearns for’. The desire for such conceptual tranquillity is a recurrent theme in Wittgenstein's work, and especially in his later ‘grammatical-therapeutic’ philosophy. Some commentators (notably Rush Rhees and C. G. Luckhardt) have cautioned that emphasising this facet of Wittgenstein's work ‘trivialises’ philosophy – something which is at odds with Wittgenstein's own philosophical ‘seriousness’ (in particular his insistence that philosophy demands that one ‘Go the bloody (...) hard way’). Drawing on a number of correlations between Wittgenstein's conception of philosophy and that of the Pyrrhonian Sceptics, in this paper I defend a strong ‘therapeutic’ reading of Wittgenstein, and show how this can be maintained without ‘trivialising’ philosophy. (shrink)

This article argues for four interrelated claims: Metaphilosophy is not one sub-discipline of philosophy, nor is it restricted to questions of methodology. Rather, metaphilosophical inquiry encompasses the general background conditions of philosophical practice. These background conditions are of various sorts, not only those routinely considered “philosophical” but also those considered biographical, historical, and sociological. Accordingly, we should be wary of the customary distinction between what is proper and merely contingent to philosophy. “What is philosophy?” is best understood as a practical (...) question concerning how members of different philosophical sub-communities identify what is pertinent to their respective activities and self-conceptions. Given –, understanding what philosophy is requires us to take more seriously the social-institutional dimension of contemporary philosophical practice. (shrink)

The paper explicates Bonhoeffer's dense statement, made in a 1932 lecture, that `Reality is the sacrament of [the ethical] command'. It begins with a summary of William T. Cavanaugh's rich description of the Eucharist as that act which makes the Church Christ's body, thereby constituting the true res publica. A comparison is drawn with Bonhoeffer's account of the sacramental foundation of the Church's public proclamation of God's ethical command. Bonhoeffer differs from Cavanaugh, I suggest, not only in his conviction that (...) the Church speaks God's command penultimately and with humility, but in regarding the state as one of the means by which God acts within the penultimate to preserve creation. (shrink)

First published in 1980. Routledge is an imprint of Taylor & Francis, an informa company.

_Wittgenstein and Levinas_ examines the oft-neglected relationship between the philosophies of two of the most important and notoriously difficult thinkers of the twentieth century. By bringing the work of each philosopher to bear upon the other, Plant navigates between the antagonistic intellectual traditions that they helped to share. The central focus on the book is the complex yet illuminating interplay between a number of ethical-religious themes in both Wittgenstein's mature thinking and Levinas's distinctive account of ethical responsibility.

IN his running debate with Fr Joseph Owens, Dr Joseph Bobik at one point raises this issue.

In 1981, after 20 years of teaching and writing philosophy, Derrida claimed that ‘less than ever’ did he ‘know what philosophy is’. Indeed, his ‘knowledge of what ... constitutes the essence of philosophy’ remained ‘at zero degree’. 1 These were not flippant remarks. Rather, Derrida’s avowed uncertainty is part of a more general metaphilosophical view; namely, that ‘Philosophy has a way of being at home with itself that consists in not being at home with itself’. 2 In this article I (...) will critically reconstruct and develop this view, paying particular attention to the ‘institutional’ dimension of contemporary philosophy. (shrink)

Wittgenstein’s remarks on religious and magical practices are often thought to harbour troubling fideistic and relativistic views. Unsurprisingly, commentators are generally resistant to the idea that religious belief constitutes a ‘language‐game’ governed by its own peculiar ‘rules’, and is thereby insulated from the critical assessment of non‐participants. Indeed, on this fideist‐relativist reading, it is unclear how mutual understanding between believers and non‐believers (even between different sorts of believers) would be possible. In this paper I do three things: (i) show why (...) the fideist‐relativist reading of Wittgenstein is not wildly implausible (Sections 1–2); (ii) argue that, despite its initial plausibility, this reading fails to take into account Wittgenstein’s naturalism (Sections 3–4); and (iii) explain what sort of naturalism this is, and how it sheds light on Wittgenstein’s remarks on religious belief (Sections 5–6). (shrink)

According to Levinas, the history of western philosophy has routinely ‘assimilated every Other into the Same’. More concretely stated, philosophers have neglected the ethical significance of other human beings in their vulnerable, embodied singularity. What is striking about Levinas’ recasting of ethics as ‘first philosophy’ is his own relative disregard for non-human animals. In this article I will do two interrelated things: (1) situate Levinas’ (at least partial) exclusion of the non-human animal in the context of his markedly bleak conception (...) of ‘the state of nature’, and (2) drawing on Orwell, Wittgenstein and Gaita, argue that, despite his more positive evaluation of animality (specifically a dog named Bobby), Levinas is guided by a number of anthropomorphic prejudices; not least that the epithet ‘the animal’ can be used in the general singular. (shrink)

In "The History of Sexuality", Foucault maintains that "Western man has become a confessing animal" (1990, 59), thus implying that "man" was not always such a creature. On a related point, Wittgenstein suggests that "man is a ceremonial animal" (1996, 67); here the suggestion is that human beings are, by their very nature, ritualistically inclined. In this paper I examine this crucial difference in emphasis, first by reconstructing Foucault's "genealogy" of confession, and subsequently by exploring relevant facets of Wittgenstein's later (...) thinking. While there are significant correlations between Foucault and Wittgenstein, an important disparity emerges in relation to the question of the "natural." By critically analyzing this, I show how Wittgenstein's minimal naturalism provides an important corrective to Foucault's more extravagant claims. By implication, we see why any radical relativist, historicist, and/or constructivist position becomes untenable on Wittgensteinian grounds, even though Wittgenstein himself is often read as promoting such views. (shrink)

In his theological explorations, suggests Raymond Plant in this illuminating new guide, Hegel tackled the issues of interest to us all.