49 ideas
421 | Men who love wisdom must be inquirers into very many things indeed [Heraclitus] |
Full Idea: Men who love wisdom must be inquirers into very many things indeed. | |
From: Heraclitus (fragments/reports [c.500 BCE], B035), quoted by Clement - Miscellanies 5.140.5 | |
A reaction: …which invites the question 'Is there anything that a wisdom-seeker should NOT be interested in?' |
1491 | Everyone has the potential for self-knowledge and sound thinking [Heraclitus] |
Full Idea: Everyone has the potential for self-knowledge and sound thinking. | |
From: Heraclitus (fragments/reports [c.500 BCE], B116), quoted by John Stobaeus - Anthology 3.05.06 | |
A reaction: This is true. When people are labelled as incapable of philosophy (e.g. by Plato), it is just that they are slow developers. |
5863 | Reason is eternal, but men are foolish [Heraclitus] |
Full Idea: Although reason exists forever, men are foolish. | |
From: Heraclitus (fragments/reports [c.500 BCE]), quoted by Aristotle - The Art of Rhetoric 1407b | |
A reaction: The despair of all philosophers (e.g. Plato) who think reason is the easiest thing in the world, and stares everyone in the face, and yet people seem to spurn this supreme gift from the gods. They needed the optimism of the career teacher. |
414 | Logos is common to all, but most people live as if they have a private understanding [Heraclitus] |
Full Idea: Although the universal law (logos) is common to all, the majority live as if they had understanding peculiar to themselves. | |
From: Heraclitus (fragments/reports [c.500 BCE], B002), quoted by Sextus Empiricus - Against the Professors (six books) 7.133.4- | |
A reaction: Heraclitus mentions 'logos' in just three fragments - this one, and Idea 15660 and Idea 424. |
416 | Beautiful harmony comes from things that are in opposition to one another [Heraclitus] |
Full Idea: That which is in opposition is in concert, and from things that differ comes the beautiful harmony. | |
From: Heraclitus (fragments/reports [c.500 BCE], B008), quoted by Aristotle - Nicomachean Ethics 1155b04 |
425 | A thing can have opposing tensions but be in harmony, like a lyre [Heraclitus] |
Full Idea: They do not understand how that which differs with itself is in agreement: harmony consists of opposing tensions, like that of the bow and the lyre. | |
From: Heraclitus (fragments/reports [c.500 BCE], B051), quoted by Hippolytus - Refutation of All Heresies 9.9.2 | |
A reaction: Like squabbling couples who resent outside intervention. The remark suggests the virtues of 'dialectic', and may get to the heart of what philosophy is. |
1312 | If everything is and isn't then everything is true, and a midway between true and false makes everything false [Aristotle on Heraclitus] |
Full Idea: The remark of Heraclitus that all things are and are not effectively renders all assertions true, and that of Anaxagoras that there is an intermediary between assertion and negation makes all assertions false. | |
From: comment on Heraclitus (fragments/reports [c.500 BCE]) by Aristotle - Metaphysics 1012a | |
A reaction: Compare Idea 416. Heraclitus is discussing truth-value 'gluts', as in paraconsistent logic, and Anaxagoras is discussing truth-value 'gaps', as in three-valued Kleene logic. |
15658 | The hidden harmony is stronger than the visible [Heraclitus] |
Full Idea: The hidden harmony is stronger (or 'better') than the visible. | |
From: Heraclitus (fragments/reports [c.500 BCE], B055), quoted by Hippolytus - Refutation of All Heresies 9.9.5 | |
A reaction: 'An unapparent connection [harmonia] is stronger than an apparent one' is Curd's translation. I'm taking this for essentialism. It is the basic idea of the essentialising child (see Gelman). The hidden explains the apparent. |
13782 | Everything gives way, and nothing stands fast [Heraclitus] |
Full Idea: Everything gives way, and nothing stands fast. | |
From: Heraclitus (fragments/reports [c.500 BCE]), quoted by Plato - Cratylus 402a | |
A reaction: This is as good a summary of the Heraclitus view of things as any, and Plato appears to present it as a verbatim quotation. |
11853 | A mixed drink separates if it is not stirred [Heraclitus] |
Full Idea: The mixed drink, of wine, cheese and barley, separates if it is not stirred. | |
From: Heraclitus (fragments/reports [c.500 BCE], B125) | |
A reaction: Wiggins quotes this, because it seems to be Heraclitus struggling to decide what sortal his drink falls under. I take it to be a problem of vagueness, since separation and mixing occur along a continuum, like a sorites. |
427 | It is not possible to step twice into the same river [Heraclitus] |
Full Idea: It is not possible to step twice into the same river. | |
From: Heraclitus (fragments/reports [c.500 BCE], B091), quoted by Plutarch - 24: The E at Delphi 392b10- |
11091 | You can bathe in the same river twice, but not in the same river stage [Quine on Heraclitus] |
Full Idea: You can bathe in the same river twice, but not in the same river stage. | |
From: comment on Heraclitus (fragments/reports [c.500 BCE]) by Willard Quine - Identity, Ostension, and Hypostasis 1 | |
A reaction: This seems to make Quine a 'perdurantist', committed to time-slices of objects, rather than whole objects enduring through change. |
2064 | If flux is continuous, then lack of change can't be a property, so everything changes in every possible way [Plato on Heraclitus] |
Full Idea: According to Heracliteans, since things must be changing, and since lack of change can't be a property of anything, then everything is always undergoing change of every kind. | |
From: comment on Heraclitus (fragments/reports [c.500 BCE], B030) by Plato - Theaetetus 182a |
430 | Senses are no use if the soul is corrupt [Heraclitus] |
Full Idea: The eyes and ears are bad witnesses for men if they have barbarian souls. | |
From: Heraclitus (fragments/reports [c.500 BCE], B107), quoted by Sextus Empiricus - Against the Mathematicians 7.126 |
1500 | When we sleep, reason closes down as the senses do [Heraclitus, by Sext.Empiricus] |
Full Idea: Since when we sleep the senses are closed, mind is separated from its surroundings and loses the power of memory. When we wake the mind re-contacts the world, and regains the power of reason. | |
From: report of Heraclitus (fragments/reports [c.500 BCE], A16) by Sextus Empiricus - Against the Professors (six books) 7.130 |
19722 | We could know the evidence for our belief without knowing why it is such evidence [Mittag] |
Full Idea: While one might understand the proposition entailed by one's evidence, one might have no idea how or why one's evidence entails it. This seems to imply one is not justified in believing the proposition on the basis of one's evidence. | |
From: Daniel M. Mittag (Evidentialism [2011], 'Evidential') | |
A reaction: An example might be seen if a layman tours a physics lab. This looks like a serious problem for evidentialism. Once you see why the evidence entails the proposition, you are getting closer to understanding than to knowledge. Explanation. |
19723 | Evidentialism can't explain that we accept knowledge claims if the evidence is forgotten [Mittag] |
Full Idea: If one came to believe p with good evidence, but has since forgotten that evidence, we might think one can continue to believe justifiably, but evidentialism appears unable to account for this. | |
From: Daniel M. Mittag (Evidentialism [2011], 'Forgotten') | |
A reaction: We would still think that the evidence was important, and we would need to trust the knower's claim that the forgotten evidence was good. So it doesn't seem to destroy the evidentialist thesis. |
19720 | Evidentialism concerns the evidence for the proposition, not for someone to believe it [Mittag] |
Full Idea: Evidentialism is not a theory about when one's believing is justified; it is a theory about what makes one justified in believing a proposition. It is a thesis regarding 'propositional justification', not 'doxastic justification'. | |
From: Daniel M. Mittag (Evidentialism [2011], 'Preliminary') | |
A reaction: Thus it is entirely about whether the evidence supports the proposition, and has no interest in who believes it or why. Knowledge is when you believe a true proposition which has good support. This could be internalist or externalist? |
19721 | Coherence theories struggle with the role of experience [Mittag] |
Full Idea: Traditional coherence theories seem unable to account for the role experience plays in justification. | |
From: Daniel M. Mittag (Evidentialism [2011], 'Evidence') | |
A reaction: I'm inclined to say that experience only becomes a justification when it has taken propositional (though not necessarily lingistic) form. That is, when you see it 'as' something. Uninterpreted shape and colour can justify virtually nothing. |
417 | Donkeys prefer chaff to gold [Heraclitus] |
Full Idea: Donkeys prefer chaff to gold. | |
From: Heraclitus (fragments/reports [c.500 BCE], B009), quoted by Aristotle - Nicomachean Ethics 1176a07 |
426 | Sea water is life-giving for fish, but not for people [Heraclitus] |
Full Idea: Sea-water is the purest and the most polluted: for fish it is drinkable and life-giving; for men, not drinkable and destructive. | |
From: Heraclitus (fragments/reports [c.500 BCE], B061), quoted by Hippolytus - Refutation of All Heresies 9.10.5 |
431 | Health, feeding and rest are only made good by disease, hunger and weariness [Heraclitus] |
Full Idea: Disease makes health pleasant and good, hunger makes satisfaction good, weariness makes rest good. | |
From: Heraclitus (fragments/reports [c.500 BCE], B111), quoted by John Stobaeus - Anthology 3.1.178 |
22189 | Why abandon a theory if you don't have a better one? [Gorham] |
Full Idea: There is no sense in abandoning a successful theory if you have nothing to replace it with. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 2) | |
A reaction: This is also a problem for infererence to the best explanation. What to do if your best explanation is not very good? The simple message is do not rush to dump a theory when faced with an anomaly. |
22190 | If a theory is more informative it is less probable [Gorham] |
Full Idea: Popper's theory implies that more informative theories seem to be less probable. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 3) | |
A reaction: [On p.75 Gorham replies to this objection] The point is that to be more testable they must be more detailed. He's not wrong. Theories are meant to be general, so they sweep up the details. But they need precise generalities and specifics. |
22195 | Structural Realists must show the mathematics is both crucial and separate [Gorham] |
Full Idea: Structural Realists must show that it is the mathematical aspects of the theories, not their content, that account for their success ….and that their structure and content can be clearly separated. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: Their approach certainly seems to rely on mathematical types of science, so it presumably fits biology, geology and even astronomy less well. |
22192 | Is Newton simpler with universal simultaneity, or Einstein simpler without absolute time? [Gorham] |
Full Idea: Is Newton's theory simpler than Einstein's, since there is only one relation of simultaneity in absolute time, or is Einstein's simpler because it dispenses with absolute time altogether? | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: A nice question, to which a good scientist might be willing to offer an answer. Since simultaneity is crucial but the existence of time is not, I would vote for Newton as the simpler. |
22194 | Structural Realism says mathematical structures persist after theory rejection [Gorham] |
Full Idea: Structural Realists say that modern science achieves a true or 'truer' account of the world only with respect to its mathematical structure rather than its intrinsic qualities or nature. The structure carries over to new theories. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: At first glance I am unconvinced that when an old theory is replaced it neverthess contains some sort of 'mathematical structure' which endures and is worth preserving. No doubt Worrall, French and co have examples. |
22197 | Theories aren't just for organising present experience if they concern the past or future [Gorham] |
Full Idea: The strangeness of interpreting theories as mere tools for organising present experience is brought out clearly in sciences like cosmology and paleontology, which largely concern events in the remote past or future. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: Not conclusive. An anti-realist has to interpret those sciences in terms of the current observations that are available. |
22196 | For most scientists their concepts are not just useful, but are meant to be true and accurate [Gorham] |
Full Idea: The main difficulty with instrumentalism is its implausible account ot the meaning of theoretical claims and concepts. Most scientists take them to be straightforward attempts to describe the world. Most say they are useful because they are accurate. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: Instrumentalism is seen as a Pragmatist view, and Dewey is cited. |
22193 | Consilience makes the component sciences more likely [Gorham] |
Full Idea: The more unification and integration is found among the modern sciences, the less likely it seems it will have all been a dream. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: I believe this strongly. Ancient theories which were complex, wide ranging and false do not impress me. This is part of my coherence view of justification. |
429 | To God (though not to humans) all things are beautiful and good and just [Heraclitus] |
Full Idea: To God, all things are beautiful, good and just; but men have assumed some things to be unjust, others just. | |
From: Heraclitus (fragments/reports [c.500 BCE], B102), quoted by Porphyry - Notes on Homer Il.4.4 | |
A reaction: The idea that all things are actually 'just' strikes me as nonsense. I also don't think I can get my head round the idea that everything is actually good and beautiful. Must try harder. |
12294 | Good and evil are the same thing [Heraclitus, by Aristotle] |
Full Idea: Heraclitus said that good and evil are the same thing. | |
From: report of Heraclitus (fragments/reports [c.500 BCE], 58/102) by Aristotle - Topics 159b32 | |
A reaction: Heaven knows what he meant by this, though it sounds suspiciously like moral nihilism. Maybe Heraclitus was not a very nice man. Or is the thought a more sophisticated one, in line with Nietzsche's remarks about cultural morality? |
419 | If one does not hope, one will not find the unhoped-for, since nothing leads to it [Heraclitus] |
Full Idea: If one does not hope, one will not find the unhoped-for, since there is no trail leading to it and no path. | |
From: Heraclitus (fragments/reports [c.500 BCE], B018), quoted by Clement - Miscellanies 2.17.4 | |
A reaction: The best remark about hope I have ever encountered. Usually they are empty platitudes. |
415 | If happiness is bodily pleasure, then oxen are happy when they have vetch to eat [Heraclitus] |
Full Idea: If happiness lay in bodily pleasures, we would call oxen happy when they find vetch to eat. | |
From: Heraclitus (fragments/reports [c.500 BCE], B004), quoted by Albertus Magnus - On Vegetables 6.401 | |
A reaction: But surely oxen are happy when they find some good vetch? Presumably, though, they are not 'eudaimon'. What is the complete fulfilment of life for an ox? |
5155 | It is hard to fight against emotion, but harder still to fight against pleasure [Heraclitus] |
Full Idea: It is hard to fight against emotion, but harder still to fight against pleasure. | |
From: Heraclitus (fragments/reports [c.500 BCE], B085), quoted by Aristotle - Nicomachean Ethics 1105a08 | |
A reaction: 'Emotion' is the Greek word 'thumos'. "The only way to get rid of a temptation is to yield to it", said Oscar Wilde. Heraclitus underestimates how very good many modern people are at dieting. |
433 | For man character is destiny [Heraclitus] |
Full Idea: For man character is destiny. | |
From: Heraclitus (fragments/reports [c.500 BCE], B119), quoted by John Stobaeus - Anthology 4.40.23 | |
A reaction: This is the extreme opposite of Sartre's existentialist claim that we can entirely change ourselves. Personally I am with Heraclitus, though I don't see why our destined character shouldn't be modified (e.g. by education). |
422 | The people should fight for the law as if for their city-wall [Heraclitus] |
Full Idea: The people should fight for the law as if for their city-wall. | |
From: Heraclitus (fragments/reports [c.500 BCE], B044), quoted by Diogenes Laertius - Lives of Eminent Philosophers 09.2 | |
A reaction: This may be the first recorded assertion of the rule of law, and hence of the separation of powers. We still have plenty of people who reject this principle. |
22198 | Aristotelian physics has circular celestial motion and linear earthly motion [Gorham] |
Full Idea: Aristotelian physics assumed that celestial motion is naturally circular and eternal while terrestrial motion is naturally toward the center of the earth and final. | |
From: Geoffrey Gorham (Philosophy of Science [2009], 4) | |
A reaction: The overthrow of this by Galileo and then Newton may have been the most dramatic revolution of the new science. It opened up the possibility of universal laws of physics. |
614 | Heraclitus said sometimes everything becomes fire [Heraclitus, by Aristotle] |
Full Idea: Heraclitus claimed that from time to time everything becomes fire. | |
From: report of Heraclitus (fragments/reports [c.500 BCE]) by Aristotle - Metaphysics 1067a |
424 | Reason tells us that all things are one [Heraclitus] |
Full Idea: When you have listened, not to me but to the law (logos), it is wise to agree that all things are one. | |
From: Heraclitus (fragments/reports [c.500 BCE], B050), quoted by Hippolytus - Refutation of All Heresies 9.9.1 |
5096 | Heraclitus says that at some time everything becomes fire [Heraclitus, by Aristotle] |
Full Idea: Heraclitus says that at some time everything becomes fire. | |
From: report of Heraclitus (fragments/reports [c.500 BCE]) by Aristotle - Physics 204b37 | |
A reaction: Modern cosmology says that Heraclitus was right (pretty much). If we say 'energy' instead of 'fire' (which may be what he meant), then he is absolutely spot-on. |
17539 | The sayings of Heraclitus are still correct, if we replace 'fire' with 'energy' [Heraclitus, by Heisenberg] |
Full Idea: If we replace Heraclitus's word 'fire' by the word 'energy' we can almost repeat his statements word for word from our modern point of view. | |
From: report of Heraclitus (fragments/reports [c.500 BCE]) by Werner Heisenberg - Physics and Philosophy 04 | |
A reaction: My problem has always been that I have no idea what 'energy' is, so I'm none the wiser. |
3054 | Heraclitus said fire could be transformed to create the other lower elements [Heraclitus, by Diog. Laertius] |
Full Idea: Heraclitus taught that fire when densified becomes liquid, and becoming concrete, becomes also water; again, that the water when concrete is turned to earth, and this is the road down. | |
From: report of Heraclitus (fragments/reports [c.500 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 09.1.6 |
15660 | Logos is the source of everything, and my theories separate and explain each nature [Heraclitus] |
Full Idea: All things come into being according to this Law ('logos'), ...and I expound theories (words) and processes (actions) separating each thing according to its nature and explaining how it is made. | |
From: Heraclitus (fragments/reports [c.500 BCE], B001), quoted by Sextus Empiricus - Against the Mathematicians 7.133 | |
A reaction: I like the fact that things are separated according to their natures (particulars!), and not that natures are somehow bestowed on individuals. |
12269 | All things are in a state of motion [Heraclitus, by Aristotle] |
Full Idea: All things are in a state of motion. | |
From: report of Heraclitus (fragments/reports [c.500 BCE]) by Aristotle - Topics 104b22 | |
A reaction: This seems right, I would say. It seems to make a 'process' the fundamental category of ontology, rather than an 'object'. |
420 | The cosmos is eternal not created, and is an ever-living and changing fire [Heraclitus] |
Full Idea: This cosmos, which is the same for all, was not created by any one of the gods or of mankind, but it was ever and is and shall be ever-living fire, kindled and quenched in measure. | |
From: Heraclitus (fragments/reports [c.500 BCE], B030), quoted by Clement - Miscellanies 5.1.103 |
1499 | Heraclitus says intelligence draws on divine reason [Heraclitus, by Sext.Empiricus] |
Full Idea: According to Heraclitus we become intelligent by drawing on divine reason. | |
From: report of Heraclitus (fragments/reports [c.500 BCE], A16) by Sextus Empiricus - Against the Professors (six books) 7.129 |
15659 | Purifying yourself with blood is as crazy as using mud to wash off mud [Heraclitus] |
Full Idea: They purify themselves by staining themselves with other blood, as if one were to step into mud to wash off mud. But a man would be thought mad if any of his fellow-men should perceive him acting thus. | |
From: Heraclitus (fragments/reports [c.500 BCE], B005), quoted by Origen - Against Celsus 7.62 |
1501 | In their ignorance people pray to statues, which is like talking to a house [Heraclitus] |
Full Idea: In their ignorance of the true nature of gods and heroes people pray to these statues, which is like someone holding a conversation with a house. | |
From: Heraclitus (fragments/reports [c.500 BCE], B005), quoted by Anon (Pyth) - Theosophia Tubigensis 68 |