Robert Hanna

The future of philosophy and the future of humankind-in-the-world are intimately related, not only (i) in the obvious sense that all philosophers are “human, all-too-human” animals—i.e., members of the biological species Homo sapiens, and also finite, fallible, and thoroughly normative imperfect in every other way too—hence the natural fate of all human animals is also the natural fate of all philosophers, but also (ii) in the more profound and subtle sense of what I’ll call philosophical futurism. Philosophical futurism is a critical, synoptic, and speculative reflection on the fate of humankind-in-the-world, with special attention paid not only to what humankind-in-the-world (including philosophy itself) will most likely be, if things continue to go along in more or less the same way as they have been and are now going, or could conceivably be, as in science fiction or other forms of imaginative projection, but also to what what humankind-in-the-world (including philosophy itself) ought to be, and therefore (assuming that “ought” entails “can”) can be, as the direct result of our individual and collective free agency, for the purpose of rationally guiding humankind in the near future. In my essay, I very briefly present, defend, and strongly recommend a version of philosophical futurism that I call Kantian futurism.

It is nowadays a commonplace of Kant-interpretation that Kant's response to Hume in the Analogies of Experience is not strictly speaking a refutation of Hume but in fact only an extended critical response to Hume's skeptical accounts of object-identity and causation, that also accepts many of Hume's working assumptions. But this approach can significantly underestimate the extent to which Kant's conception of the representational mind is radically distinct from Hume's. In particular, Kant's conception of the human mind's innately-specified spontaneous actions as ultimate sources of the veridical representation of both logical and metaphysical necessity in the world of objective experience, if correct, entails a flat-out rejection of Hume's conception of the human mind's merely projectivist abilities and activities. This in turn entails that, to this extent, the Analogies contain not only a critical response to Hume, but also a flat-out refutation of Hume

Simple or "standard" empirical judgments--as expressed in such statements as "The rose is red" or "Socrates is mortal"--are logically basic for theoretical rationality. All the more complex forms of judgment presuppose the existence and tenability of judgments of the "standard" type. The overall aim of this study is twofold: to show how the traditional theory of standard empirical judgments--as represented by Kant's doctrine of judgment--is subject to a through-going form of skepticism that I entitle "judgmental skepticism" and to attempt to develop a more adequate account of the standard empirical judgment which circumvents the central difficulties in the traditional theory. ;Part I of the study develops, and then criticizes, Kant's theory of empirical judgment. Part II of the study then attempts to develop an accurate description of the standard empirical judgment, using the critical results of part I as working clues and foils. In the last chapter of part II, what may be called a "common sense" approach to judgmental skepticism is deployed: it is claimed that the judgmental skeptic cannot challenge the tenability of all standard judgments without rational self-stultification. Accepting this auxiom, it then becomes possible simple to describe several ways in which a paradigmatic, successful, standard judgment presupposes certain instinctive or "commonsensical" cognitive abilities. The careful description of these abilities in turn provides a commonsensical or non-transcendental foundation for theoretical rationality itself

This essay is about how four deeply important Kantian ideas can significantly illuminate some essentially intertwined issues in philosophical theology, philosophical logic, the metaphysics of agency, and above all, morality. These deeply important Kantian ideas are: (1) Kant’s argument for the impossibility of the Ontological Argument, (2) Kant’s first “postulate of pure practical reason,” immortality, (3) Kant’s third postulate of pure practical reason, the existence of God, and finally (4) Kant’s second postulate of pure practical reason, freedom.

In this essay I revisit Kant's much-criticized views on arithmetic. In so doing I make a case for the claim that his theory of arithmetic is not in fact subject to the most familiar and forceful objection against it, namely that his doctrine of the dependence of arithmetic on time is plainly false, or even worse, simply unintelligible; on the contrary, Kant's doctrine about time and arithmetic is highly original, fully intelligible, and with qualifications due to the inherent limitations of his conceptions of arithmetic and logic, defensible to an important extent. (edited)

Robert Hanna works out a unified contemporary Kantian theory of rational human cognition and knowledge. Along the way, he provides accounts of intentionality and its contents, sense perception and perceptual knowledge, the analytic-synthetic distinction, the nature of logic, and a priori truth and knowledge in mathematics, logic, and philosophy. This book is specifically intended to reach out to two very different audiences: contemporary analytic philosophers of mind and knowledge, and contemporary Kantian philosophers or Kant-scholars. At the same time, it rides the crest of a wave of exciting and revolutionary emerging new trends and new work in the philosophy of mind and epistemology, with a special concentration on the philosophy of perception. What is revolutionary in this new wave are its strong emphases on action, on cognitive phenomenology, on disjunctivist direct realism, on embodiment, and on sense perception as a primitive and proto-rational capacity for cognizing the world. Hanna makes a fundamental contribution to this philosophical revolution by giving it a specifically contemporary Kantian twist, and by pushing these new lines of investigation radically further.

cognitive psychology; given the connection between rationality and logic that Hanna claims, it follows that the nature of logic is significantly revealed to us by cognitive psychology. Hanna's proposed "logical cognitivism" has two important consequences: the recognition by logically oriented philosophers that psychologists are their colleagues in the metadiscipline of cognitive science; and radical changes in cognitive science itself. Cognitive science, Hanna argues, is not at bottom a natural science; it is both an objective or truth-oriented science and a normative human science, as is logic itself.

Of all the well-known doctrines in Kant's first Critique, the transcendental psychology is perhaps the most notorious. Frege's and Husserl's famous fin de siècle critiques of "logical psychologism," together with Strawson's withering scorn in The Bounds of Sense, have combined to make Kant's explicitly psychological approach to issues in epistemology, metaphysics, and the theory of meaning seem old-fashioned at best and simply embarrassing at worst. Patricia Kitcher's Kant's Transcendental Psychology aims to change all that; she offers a revisionist reading of the Critique of Pure Reason in which transcendental psychology is understood to be not only central to Kant's overall argument, but quite defensible on its own terms.

There are perceptual states whose representational content cannot even in principle be conceptual. If that claim is true, then at least some perceptual states have content whose semantic structure and psychological function are essentially distinct from the structure and function of conceptual content. Furthermore the intrinsically “orientable” spatial character of essentially non-conceptual content entails not only that all perceptual states contain non-conceptual content in this essentially distinct sense, but also that consciousness goes all the way down into so-called unconscious or subpersonal mental states. Both my argument for the existence of essentially non-conceptual content and my theory of its structure and function have a Kantian provenance.

The nebulous area between natural language and formal logic has always puzzled philosophers. The connections between informal logic, rhetoric, dialectic, and metaphor along with the other tropes, have not been made conceptually perspicuous. The theoretical tendency on the part of philosophers has generally been to label the whole field "logically ill-behaved" and to turn over its keeping to Sophists, composition-masters, and literary scholars. Recently, this trend of philosophical neglect has been reversed. Perelman's The Realm of Rhetoric falls squarely in this current movement, as a continuation of the work begun in Perelman and Olbrechts-Tyteca's The New Rhetoric.

In Embodied Minds in Action, Robert Hanna and Michelle Maiese work out a unified treatment of three fundamental philosophical problems: the mind-body problem, the problem of mental causation, and the problem of action. This unified treatment rests on two basic claims. The first is that conscious, intentional minds like ours are essentially embodied. This entails that our minds are necessarily spread throughout our living, organismic bodies and belong to their complete neurobiological constitution. So minds like ours are necessarily alive. The second claim is that essentially embodied minds are self-organizing thermodynamic systems. This entails that our mental lives consist in the possibility and actuality of moving our own living organismic bodies through space and time, by means of our conscious desires. The upshot is that we are essentially minded animals who help to create the natural world through our own agency. This doctrine--the Essential Embodiment Theory--is a truly radical idea which subverts the traditionally opposed and seemingly exhaustive categories of Dualism and Materialism, and offers a new paradigm for contemporary mainstream research in the philosophy of mind and cognitive neuroscience

In this paper we (i) identify the notion of ‘essentially non-conceptual content’ by critically analyzing the recent and contemporary debate about non-conceptual content, (ii) work out the basics of broadly Kantian theory of essentially non-conceptual content in relation to a corresponding theory of conceptual content, and then (iii) demonstrate one effective application of the Kantian theory of essentially non-conceptual content by using this theory to provide a ‘minimalist’ solution to the problem of perceptual self-knowledge which is raised by Strong Externalism.

Episodic memory is usually regarded in a Conceptualist light, in the sense of its being dependent upon the grasp of concepts directly relevant to the act of episodic recollection itself, such as a concept of past times and of the self as an experiencer. Given this view, its development is typically timed as being in the early school-age years. We present a minimalist, Non-Conceptualist approach in opposition to this view, but one that also exists in clear contrast to the kind of minimalism espoused by Clayton and Dickinson with regard to memory in food-caching birds. While emphasising the nonconceptual elements of episodic memory we also insist on the essentially phenomenological nature of the memory. We propose the third year of life as a plausible onset period. Our view is rooted in Kantian assumptions about the spatiotemporal content of experience and about the synthetic unity of experience—and thus of re-experience. We answer two objections to this position

It is traditionally held that our knowledge of necessity is a priori; but the familiar theories of a priori knowledge – platonism and conventionalism – have now been discredited, and replaced by either modal skepticism or a posteriori essentialism. The main thesis of this paper is that Kant's theory of a priori knowledge, when detached from his transcendental idealism, offers a genuine alternative to these unpalatable options. According to Kant's doctrine, all epistemic necessity is grounded directly or indirectly on our capacity for clear and distinct rational intuition. Insight, in turn, depends upon functions of the imagination for creating “mental models” of necessary truths. This doctrine is well exemplified by Kant's account of our knowledge of simple analytic truths

In Rationality and Logic, Robert Hanna argues that logic is intrinsically psychological and that human psychology is intrinsically logical. He claims that logic is cognitively constructed by rational animals and that rational animals are essentially logical animals. In order to do so, he defends the broadly Kantian thesis that all rational animals possess an innate cognitive "logic faculty." Hanna 's claims challenge the conventional philosophical wisdom that sees logic as a fully formal or "topic-neutral" science irreconcilably separate from the species- or individual-specific focus of empirical psychology.Logic and psychology went their separate ways after attacks by Frege and Husserl on logical psychologism--the explanatory reduction of logic to empirical psychology. Hanna argues, however, that--despite the fact that logical psychologism is false--there is an essential link between logic and psychology. Rational human animals constitute the basic class of cognizers or thinkers studied by cognitive psychology; given the connection between rationality and logic that Hanna claims, it follows that the nature of logic is significantly revealed to us by cognitive psychology. Hanna 's proposed "logical cognitivism" has two important consequences: the recognition by logically oriented philosophers that psychologists are their colleagues in the metadiscipline of cognitive science; and radical changes in cognitive science itself. Cognitive science, Hanna argues, is not at bottom a natural science; it is both an objective or truth-oriented science and a normative human science, as is logic itself.