14 ideas
23026 | We know mathematical axioms, such as subtracting equals from equals leaves equals, by a natural light [Leibniz] |
Full Idea: It is by the natural light that the axioms of mathematics are recognised. If we take away the same quantity from two equal things, …a thing we can easily predict without having experienced it. | |
From: Gottfried Leibniz (Letters to Queen Charlotte [1702], p.189) | |
A reaction: He also says two equal weights will keep a balance level. Plato thinks his slave boy understands halving an area by the natural light, but that is just as likely to be experience. It is too easy to attribut thoughts to a 'natural light'. |
13189 | A necessary feature (such as air for humans) is not therefore part of the essence [Leibniz] |
Full Idea: That which is necessary for something does not constitute its essence. Air is necessary for our life, but our life is something other than air. | |
From: Gottfried Leibniz (Letters to Queen Charlotte [1702], 1702) | |
A reaction: Bravo. Why can't modern philosophers hang on to this distinction? They seem to think that because they don't believe in traditional essences they can purloin the word for something else. Same with the word 'abstraction'. |
12251 | Substantial forms are not understood, and explain nothing [Descartes] |
Full Idea: Clearly no explanation can be given by these substantial forms for any natural action, since their defenders admit that they are occult and that they do not understand them themselves, ...so they explain nothing. | |
From: René Descartes (Letters to Regius [1642], 1642.01), quoted by David S. Oderberg - Real Essentialism 267 n5 | |
A reaction: [Oderberg gives refs for attack by Locke and Hume, p.66] Descartes' target is Aristotle's hylomorphism. The problem seems to be understanding what Aristotle meant, which is much more than mere 'shape'. More like 'controlling principle'. |
19432 | Intelligible truth is independent of any external things or experiences [Leibniz] |
Full Idea: Intelligible truth is independent of the truth or of the existence outside us of sensible and material things. ....It is generally true that we only know necessary truths by the natural light [of reason] | |
From: Gottfried Leibniz (Letters to Queen Charlotte [1702], 1702) | |
A reaction: A nice quotation summarising a view for which Leibniz is famous - that there is a tight correlation between necessary truths and our a priori knowledge of them. The obvious challenge comes from Kripke's claim that scientists can discover necessities. |
19430 | We know objects by perceptions, but their qualities don't reveal what it is we are perceiving [Leibniz] |
Full Idea: We use the external senses ...to make us know their particular objects ...but they do not make us know what those sensible qualities are ...whether red is small revolving globules causing light, heat a whirling of dust, or sound is waves in air. | |
From: Gottfried Leibniz (Letters to Queen Charlotte [1702], 1702) | |
A reaction: These seems to be exactly the concept of secondary qualities which Locke was promoting. They are unreliable information about the objects we perceive. Primary qualities are reliable information. I like that distinction. |
19431 | There is nothing in the understanding but experiences, plus the understanding itself, and the understander [Leibniz] |
Full Idea: It can be said that there is nothing in the understanding which does not come from the senses, except the understanding itself, or that which understands. | |
From: Gottfried Leibniz (Letters to Queen Charlotte [1702], 1702) | |
A reaction: Given that Leibniz is labelled as a 'rationalist', this is awfully close to empiricism. Not Locke's 'tabula rasa' perhaps, but Hume's experiences plus associations. Leibniz has a much loftier notion of understanding and reason than Hume does. |
21833 | Research suggest that we overrate conscious experience [Flanagan] |
Full Idea: The emerging consensus is that we probably overrate the power of conscious experience in our lives. Freud, of course, said the same thing for different reasons. | |
From: Owen Flanagan (The Really Hard Problem [2007], 3 'Ontology') | |
A reaction: [He cites Pockett, Banks and Gallagher 2006]. Freud was concerned with big deep secrets, but the modern view concerns ordinary decisions and perceptions. An important idea, which should incline us all to become Nietzscheans. |
21834 | Sensations may be identical to brain events, but complex mental events don't seem to be [Flanagan] |
Full Idea: There is still some hope for something like identity theory for sensations. But almost no one believes that strict identity theory will work for more complex mental states. Strict identity is stronger than type neurophysicalism. | |
From: Owen Flanagan (The Really Hard Problem [2007], 3 'Ontology') | |
A reaction: It is so hard to express the problem. What needs to be explained? How can one bunch of neurons represent many different things? It's not like computing. That just transfers the data to brains, where the puzzling stuff happens. |
21837 | Morality is normative because it identifies best practices among the normal practices [Flanagan] |
Full Idea: Morality is 'normative' in the sense that it consists of the extraction of ''good' or 'excellent' practices from common practices. | |
From: Owen Flanagan (The Really Hard Problem [2007], 4 'Naturalism') |
21830 | For Darwinians, altruism is either contracts or genetics [Flanagan] |
Full Idea: Two explanations came forward in the neo-Darwinian synthesis. Altruism is either 1) person-based reciprocal altruism, or 2) gene-based kin altruism. | |
From: Owen Flanagan (The Really Hard Problem [2007], 2 'Darwin') | |
A reaction: Flanagan obviously thinks there is also 'genuine psychological atruism'. Presumably we don't explain mathematics or music or the desire to travel as either contracts or genetics, so we have other explanations available. |
21835 | We need Eudaimonics - the empirical study of how we should flourish [Flanagan] |
Full Idea: It would be nice if I could advance the case for Eudaimonics - empirical enquiry into the nature, causes, and constituents of flourishing, …and the case for some ways of living and being as better than others. | |
From: Owen Flanagan (The Really Hard Problem [2007], 4 'Normative') | |
A reaction: Things seem to be moving in that direction. Lots of statistics about happiness have been appearing. |
21831 | Alienation is not finding what one wants, or being unable to achieve it [Flanagan] |
Full Idea: What Marx called 'alienation' is the widespread condition of not being able to discover what one wants, or not being remotely positioned to achieve. | |
From: Owen Flanagan (The Really Hard Problem [2007], 2 'Expanding') | |
A reaction: I took alienation to concern people's relationship to the means of production in their trade. On Flanagan's definition I would expect almost everyone aged under 20 to count as alienated. |
16772 | An angelic mind would not experience pain, even when connected to a human body [Descartes, by Pasnau] |
Full Idea: Descartes points out that an angelic mind, even if causally connected to a human body, would not experience the same sort of bodily sensations; it would, instead, simply observe flesh being torn, like a piece of paper. | |
From: report of René Descartes (Letters to Regius [1642], III:493) by Robert Pasnau - Metaphysical Themes 1274-1671 25.6 | |
A reaction: Does that mean that the angel could not have the experience even if it wanted to have it. So they can't pick up a cup either? So they can't make themselves known to us, even if they are desperate to? So the Annunciation never happened? |
21832 | Buddhists reject God and the self, and accept suffering as key, and liberation through wisdom [Flanagan] |
Full Idea: Buddhism rejected the idea of a creator God, and the unchanging self [atman]. They accept the appearance-reality distinction, reward for virtue [karma], suffering defining our predicament, and that liberation [nirvana] is possible through wisdom. | |
From: Owen Flanagan (The Really Hard Problem [2007], 3 'Buddhism') | |
A reaction: [Compressed] Flanagan is an analytic philosopher and a practising Buddhist. Looking at a happiness map today which shows Europeans largely happy, and Africans largely miserable, I can see why they thought suffering was basic. |