Many interpreters read Nietzsche as an epiphenomenalist. This means that, contrary to everyday “felt” experience, consciousness has no causal influence on our actions. In the first half of this paper I show that an epiphenomenalist interpretation proposed by Brian Leiter is unsupported by Nietzsche’s texts. Further, contemporary research does not conclusively support epiphenomenalism, as Leiter claims. In the second half of the paper I present the novel, causally efficacious view of consciousness that is supported by Nietzsche’s texts. This view of consciousness does not present consciousness as a self-caused faculty that is in some way separate from the rest of our mind and body, but rather views consciousness as a non-essential property of certain mental states. I trace the development of this idea through two key passages and show that, in the danger it presents as well as in the promise, consciousness is clearly causally efficacious.

It has often been argued that John Searle’s theory of mind, biological naturalism, due to its commitment to mental irreducibility amounts to no more than disguised property dualism. I suggest that a thorough analysis of Searle’s somewhat unusual views on the nature of reduction reveals this irreducibility to be not a metaphysical relation between mental properties and physical but one concerned only with the semantics of the respective terms used to refer to these. As a result, I argue, irreducibility in his sense is insufficient to support a metaphysical conclusion like property dualism. Finally, to reinforce this point I give a concrete example of a potential physicalist view which is compatible with the analysis of irreducibility as semantic but not as metaphysical and hence on my reasoning remains open to Searle.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Anomalous monism is a theory in the philosophy of mind put forth by Donald Davidson in the 1970s. Although influential at the time, it received numerous criticisms, and it is now widely rejected. The present Master s Dissertation argues for a revision of the reasons for which anomalous monism should be rejected. According to a well known objection in the literature, anomalous monism entails the thesis of property epiphenomenalism, and should be rejected because this consequence is unacceptable. It is proposed that this objection is inadequate in its two crucial steps. First, property epiphenomenalism does not seem to follow from anomalous monism, and, second, there seems to be no sufficient reason for a decisive rejection of property epiphenomenalism. Despite this, there are alternative reasons for rejecting anomalous monism, which concern the justification of the monist thesis. At least one of the premises Davidson takes to support it appears to be false, and, additionally, the very possibility of the monism at issue is threatened by problems in the ontology of events it assumes. / O monismo anômalo é uma teoria em filosofia da mente proposta por Donald Davidson na década de 1970. Embora influente na época, essa teoria recebeu inúmeras críticas e é atualmente amplamente rejeitada. A presente dissertação argumenta em favor de uma revisão das razões pelas quais o monismo anômalo deve ser rejeitado. De acordo com uma objeção bem conhecida na literatura, o monismo anômalo implica a tese do epifenomenismo de propriedades e deve ser rejeitado porque essa consequência é inaceitável. Propõe-se que essa objeção é inadequada em seus dois passos cruciais. Em primeiro lugar, o epifenomenismo de propriedades não parece se seguir do monismo anômalo, e, em segundo, não parece haver razões suficientes para uma rejeição decisiva do epifenomenismo de propriedades. Apesar disso, há razões alternativas para se rejeitar o monismo anômalo, que dizem respeito à justificação da tese monista. Pelo menos uma das premissas que Davidson empregou em sua defesa parece falsa, e, adicionalmente, a própria possibilidade do monismo em questão é ameaçada por dificuldades na ontologia de eventos que pressupõe.

Le concept de libre arbitre semble aujourd’hui menacé par les récentes avancées neuroscientifiques. Nous examinons dans un premier chapitre le débat concernant la compatibilité du libre arbitre et du déterminisme causal. Le deuxième chapitre étudie la thèse de l’épiphénoménalisme de la conscience en recensant les données expérimentales actuellement disponibles. La théorie défendue par Daniel Wegner est analysée et donne lieu à une prise en compte des limitations de la conscience, qui sont également appuyées par la psychologie expérimentale. Ces limitations sont examinées dans une troisième partie, qui met en parallèle les notions d’inconscient cognitif et d’inconscient psychanalytique afin de permettre une redéfinition de l’action volontaire à la lumière de ces limitations. Nous défendons dans une dernière partie une approche neurophénoménologique, selon laquelle une étude de la conscience doit nécessairement passer par la prise en compte des données en première et en troisième personne, afin que ces deux types de données s’informent mutuellement. Cette démarche, qui nécessite un entraînement des capacités attentionnelles afin de décrire au mieux l’expérience vécue, permet d’envisager non seulement de nouvelles perspectives de recherche concernant la prise de décision, mais également une nouvelle définition du libre arbitre comme apprentissage. Cette redéfinition du libre arbitre s’appuie sur les études effectuées en neurosciences sur les mécanismes attentionnels, ainsi que sur l’examen des vertus thérapeutiques de certaines techniques de redirection de l’attention. / The concept of free will seems now to be threatened by recent advances in neuroscience. In the first chapter, we examine the debate concerning the compatibility of free will and causal determinism. The second chapter studies the thesis of the epiphenomenalism of consciousness by making an inventory of the experimental data currently available. The theory defended by Daniel Wegner is analyzed and leads us to take into account the limitations of consciousness, which are also supported by experimental psychology. These limitations are examined in the third chapter, in which we draw a parallel between the notions of cognitive unconscious and psychoanalytic unconscious, allowing us to redefine voluntary action in light of these limitations. In the last chapter, we defend a neurophenomenological approach, according to which a study of consciousness must necessarily take into account first-person as well as third-person data, in order for each of these types of data to inform the other. This approach, which requires a training of attentional capacities in order to best describe lived experience, allows not only to consider new research perspectives about decision making, but also a new definition of free will as an apprenticeship. This redefinition is based on neuroscientific studies about attentional mechanisms, as well as on the examination of the therapeutic virtues of certain redirection of attention techniques.

Nesta tese, desenvolve-se um argumento explicativo da relação mente-corpo fundamentada na noção de mônada, ou substância simples, como elemento ontológico estruturante de um enfoque contemporâneo da mencionada relação. Na primeira parte da tese, de natureza crítica, analisam-se as teorias fisicistas contemporâneas da mencionada relação, a saber, a teoria de superveniência da mente, da emergência e da causação mental, com vistas a justificar a proposta de assunção de uma premissa dualista que visa, principalmente, propor, em contraste com o cenário epifenomenalista do fisicismo contemporâneo, uma ontologia da mente que seja compatível com as intuições realistas do senso comum e da psicológica popular sobre a força causal da mente no universo físico. Na segunda parte, de natureza positiva, propõe-se um argumento explicativo da relação mente-corpo partindo-se, para tanto, de uma assunção e duas premissas. A assunção afirma que a mente tem o mesmo importe ontológico da matéria física, sendo estes considerados como elementos composicionais, afirmação a qual se denomina dualismo elementar. No que se refere às premissas, propõe-se duas, a saber, a tese composicional holística, que afirma que a mente e a matéria são partes constitutivas de um todo chamado substância simples, e a tese composicional mereológica, que afirma que as substâncias simples ou mônadas compõem mereologicamente, por superveniência, a relação mente-corpo. Examinam-se também algumas objeções ao argumento monadista proposto. / This thesis offers an explanatory argument concerning the mind-body relation, an argument that is grounded on the notion of monad, or the simple substance, as an ontological element for proposing a contemporary approach to the mind-body relation. In the first part, a critique of the current physicalist theories of mind is given, namely, supervenience, emergence and mental causation, in order to justify the proposal of a dualist premiss which aims at an ontology of mind which satisfies the realistic intuitions of common sense and of folk psychology on the causal efficacy and relevance of the mind amid the physical, in opposition to the epiphenomenalist view of contemporary physicalist theories. In the second part, the positive one, we propose an explanatory argument for monadism about mind-body relations, based on an assumption and two premises. The assumption says that the mind has the same ontological import of the physical matter, and they, mind and matter, are considered to be elements entering the composition of psychophysical relations, an assumption called elementary dualism. Regarding the premises, we propose two, namely, the holistic compositional thesis, which asserts that mind and matter are parts entering the composition of true wholes called substances, and the mereological compositional thesis, which says that such simple substances compose, via supervenience, the mind-body relations. Some objections to the proposed monadist argument are examined and rejoindered as well.

Nesta tese, desenvolve-se um argumento explicativo da relação mente-corpo fundamentada na noção de mônada, ou substância simples, como elemento ontológico estruturante de um enfoque contemporâneo da mencionada relação. Na primeira parte da tese, de natureza crítica, analisam-se as teorias fisicistas contemporâneas da mencionada relação, a saber, a teoria de superveniência da mente, da emergência e da causação mental, com vistas a justificar a proposta de assunção de uma premissa dualista que visa, principalmente, propor, em contraste com o cenário epifenomenalista do fisicismo contemporâneo, uma ontologia da mente que seja compatível com as intuições realistas do senso comum e da psicológica popular sobre a força causal da mente no universo físico. Na segunda parte, de natureza positiva, propõe-se um argumento explicativo da relação mente-corpo partindo-se, para tanto, de uma assunção e duas premissas. A assunção afirma que a mente tem o mesmo importe ontológico da matéria física, sendo estes considerados como elementos composicionais, afirmação a qual se denomina dualismo elementar. No que se refere às premissas, propõe-se duas, a saber, a tese composicional holística, que afirma que a mente e a matéria são partes constitutivas de um todo chamado substância simples, e a tese composicional mereológica, que afirma que as substâncias simples ou mônadas compõem mereologicamente, por superveniência, a relação mente-corpo. Examinam-se também algumas objeções ao argumento monadista proposto. / This thesis offers an explanatory argument concerning the mind-body relation, an argument that is grounded on the notion of monad, or the simple substance, as an ontological element for proposing a contemporary approach to the mind-body relation. In the first part, a critique of the current physicalist theories of mind is given, namely, supervenience, emergence and mental causation, in order to justify the proposal of a dualist premiss which aims at an ontology of mind which satisfies the realistic intuitions of common sense and of folk psychology on the causal efficacy and relevance of the mind amid the physical, in opposition to the epiphenomenalist view of contemporary physicalist theories. In the second part, the positive one, we propose an explanatory argument for monadism about mind-body relations, based on an assumption and two premises. The assumption says that the mind has the same ontological import of the physical matter, and they, mind and matter, are considered to be elements entering the composition of psychophysical relations, an assumption called elementary dualism. Regarding the premises, we propose two, namely, the holistic compositional thesis, which asserts that mind and matter are parts entering the composition of true wholes called substances, and the mereological compositional thesis, which says that such simple substances compose, via supervenience, the mind-body relations. Some objections to the proposed monadist argument are examined and rejoindered as well.