For the ancient Mexicas, the composition of the human body was similar to that of the cosmos, with both being composed of dense and light substances. The light substance of the human body was divine in nature and formed the different souls of each human being. Some souls were indispensable for human existence while others were unnecessary and often harmful. The dense part of the human body functioned through its union with the souls. Like the different souls, the dense parts of the human body also had specific functions dedicated to different activities. For example, human thought derived primarily from the heart. Souls could be damaged, which could cause them to malfunction and lead to illness and possibly death in the human being. As the souls were divine, each was a conscious being with its own personality; thus there could be disagreements between them. Disharmony could also lead to illness.
Aztec Thought and Culture: A Study of the Ancient Nahuatl Mind
Publisher’s note: For at least two millennia before the advent of the Spaniards in 1519, there was a flourishing civilization in central Mexico. During that long span of time a cultural evolution took place which saw a high development of the arts and literature, the formulation of complex religious doctrines, systems of education, and diverse political and social organization. The rich documentation concerning these people, commonly called Aztecs, includes, in addition to a few codices written before the Conquest, thousands of folios in the Nahuatl or Aztec language written by natives after the Conquest. Adapting the Latin alphabet, which they had been taught by the missionary friars, to their native tongue, they recorded poems, chronicles, and traditions.
The fundamental concepts of ancient Mexico presented and examined in this book have been taken from more than ninety original Aztec documents. They concern the origin of the universe and of life, conjectures on the mystery of God, the possibility of comprehending things beyond the realm of experience, life after death, and the meaning of education, history, and art. The philosophy of the Nahuatl wise men, which probably stemmed from the ancient doctrines and traditions of the Teotihuacans and Toltecs, quite often reveals profound intuition and in some instances is remarkably “modern.”
This English edition is not a direct translation of the original Spanish, but an adaptation and rewriting of the text for the English-speaking reader.
The Limitations of Perceptual Transparency
Abstract: My first aim in this paper is to show that the transparency claim cannot serve the purpose to which it is assigned; that is, the idea that perceptual experience is transparent is no help whatsoever in motivating an externalist account of phenomenal character. My second aim is to show that the internalist qualia theorist’s response to the transparency idea has been unnecessarily concessive to the externalist. Surprisingly, internalists seem to allow that much of the phenomenal character of perceptual experience depends essentially (and not just causally) upon externally located properties. They argue that we can also be aware of internal, non-intentional qualia. I present an alternative response the internalist can make to the transparency claim: phenomenal character is wholly internal, and seeming to be aware of externally located properties just is being aware of internally constituted experiential features.
Nonconceptual Content
Abstract: Nonconceptualists maintain that there are ways of representing the world that do not reflect the concepts a creature possesses. They claim that the content of these representational states is genuine content because it is subject to correctness conditions, but it is nonconceptual because the creature to which we attribute it need not possess any of the concepts involved in the specification of that content. Appeals to nonconceptual content have seemed especially useful in attempts to capture the representational properties of perceptual experiences, the representational states of pre-linguistic children and non-human animals, the states of subpersonal visual information-processing systems, and the subdoxastic states involved in tacit knowledge of the grammar of a language. Nonconceptual content is also invoked in the explanation of concept possession, concept acquisition, sensorimotor behaviour, and in the analysis of the notion of self-consciousness. The notion of nonconceptual content plays an important role in many discussions about the relationships between perception and thought.
Conceivability, possibility, and the mind-body problem
Abstract: In (Chalmers, 1996), David Chalmers influentially argued that if physicalism is true then every positive truth is a priori entailed by the full physical description—this is called ‘the a priori entailment thesis’. However, ascriptions of phenomenal consciousness are not so entailed and thus he concludes that Physicalism is false. As he puts it, ‘zombies’ are metaphysically possible. I attempt to show that this argument is refuted by considering an analogous argument in the mouth of a zombie. The conclusion of this argument is false so one of the premises is false. I argue at length that this shows that the original conceivability argument also has a false premise and so is invalid.
Is consciousness important?
Abstract: The paper discusses the utility of the notion of consciousness for the behavioural and brain sciences. It describes four distinctively different senses of ‘conscious’, and argues that to cope with the heterogeneous phenomena loosely indicated thereby, these sciences not only do not but should not discuss them in terms of ‘consciousness’. It is thus suggested that ‘the problem’ allegedly posed to scientists by consciousness is unreal; one need neither adopt a realist stance with respect to it, nor include the term and its cognates in the sciences’ conceptual apparatus. The paper briefly examines Nagel’s [1974] article, since this presents the strongest counter to the thesis proposed
The representational theory of mind
Abstract: It is argued that it is important for cognitive scientists to understand both the precise nature of RTM, and the challenges to it. The biggest foundational challenge is to develop an adequate naturalistic theory of how representational content is determined. Philosophers have proposed several ingenious theory-sketches of content determination but none accounts for the full range of semantic features mental representations arguably have. Another major challenge is the existence of non-representational competitor research programs. A likely future scenario is that we will be able to explain certain ‘low-level’ aspects of cognition without resort to representations but that representational hypotheses will still be needed to account for the intentionality-based features of cognition and ‘representation hungry’ higher-level processes.
Explanation and the Explanatory Gap
Abstract: The Explanatory Gap’ is a label for the idea that we cannot explain consciousness in terms of brain activity. There are many different formulations of the explanatory gap, but all discussion about it assumes that there is only one gap, which consists of the absence of a deductive explanation. This assumption is mistaken. In this paper, I show that the position that deductive explanation is privileged in this case is unmotivated. I argue that whether or not there is an explanatory gap depends on the kind of explanation in question, so there is no single, unified explanatory gap but only the absence and (perhaps) presence of different sorts of explanation.
Qualia and representations
Abstract: Dretske has recently offered a representational theory of perceptual experience – considered as paradigmatic of the qualitative and phenomenal aspects of our mental life. This theory belongs, as do his previous works, to a naturalistic approach to mental representation
The experience property framework: a misleading paradigm
Abstract: According to the experience property framework qualia are properties of experiences the subject undergoing the experience is aware of. A phenomenological argument against this framework is developed and a few mistakes invited by the framework are described. An alternative to the framework, the framework of experiential properties is presented and defended as preferable. It is argued that the choice between these two frameworks makes a substantial difference for theoretical purposes.