Combining Texts

All the ideas for 'Natural Kinds', 'Liberalism: the basics' and 'In Defense of Absolute Essentialism'

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53 ideas

1. Philosophy / G. Scientific Philosophy / 3. Scientism
Philosophy is continuous with science, and has no external vantage point [Quine]
     Full Idea: I see philosophy not as an a priori propaedeutic or groundwork for science, but as continuous with science. I see philosophy and science as in the same boat. …There is no external vantage point, no first philosophy.
     From: Willard Quine (Natural Kinds [1969], p.126)
     A reaction: Philosophy is generalisation. Science holds the upper hand, because it settles the subject-matter to be generalised.
6. Mathematics / A. Nature of Mathematics / 2. Geometry
Klein summarised geometry as grouped together by transformations [Quine]
     Full Idea: Felix Klein's so-called 'Erlangerprogramm' in geometry involved characterizing the various branches of geometry by what transformations were irrelevant to each.
     From: Willard Quine (Natural Kinds [1969], p.137)
7. Existence / C. Structure of Existence / 8. Stuff / a. Pure stuff
Mass terms just concern spread, but other terms involve both spread and individuation [Quine]
     Full Idea: 'Yellow' and 'water' are mass terms, concerned only with spread; 'apple' and 'square' are terms of divided reference, concerned with both spread and individuation.
     From: Willard Quine (Natural Kinds [1969], p.124)
     A reaction: Would you like some apple? Pass me that water. It is helpful to see that it is a requirement of 'individuation' that is missing from terms for stuff.
8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / a. Dispositions
Once we know the mechanism of a disposition, we can eliminate 'similarity' [Quine]
     Full Idea: Once we can legitimize a disposition term by defining the relevant similarity standard, we are apt to know the mechanism of the disposition, and so by-pass the similarity.
     From: Willard Quine (Natural Kinds [1969], p.135)
     A reaction: I love mechanisms, but can we characterise mechanisms without mentioning powers and dispositions? Quine's dream is to eliminate 'similarity'.
8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / d. Dispositions as occurrent
We judge things to be soluble if they are the same kind as, or similar to, things that do dissolve [Quine]
     Full Idea: Intuitively, what qualifies a thing as soluble though it never gets into water is that it is of the same kind as the things that actually did or will dissolve; it is similar to them.
     From: Willard Quine (Natural Kinds [1969], p.130)
     A reaction: If you can judge that the similar things 'will' dissolve, you can cut to the chase and judge that this thing will dissolve.
9. Objects / D. Essence of Objects / 6. Essence as Unifier
A property is essential iff the object would not exist if it lacked that property [Forbes,G]
     Full Idea: A property P is an essential property of an object x iff x could not exist and lack P, that is, as they say, iff x has P at every world at which x exists.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 1)
     A reaction: This immediately places the existence of x outside the normal range of its properties, so presumably 'existence is not a predicate', but that dictum may be doubted. As it stands this definition will include trivial and vacuous properties.
Properties are trivially essential if they are not grounded in a thing's specific nature [Forbes,G]
     Full Idea: Essential properties may be trivial or nontrivial. It is characteristic of P's being trivially essential to x that x's possession of P is not grounded in the specific nature of x.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 2)
     A reaction: This is where my objection to the modal view of essence arises. How is he going to explain 'grounded' and 'specific nature' without supplying an entirely different account of essence?
9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties
A relation is essential to two items if it holds in every world where they exist [Forbes,G]
     Full Idea: A relation R is essential to x and y (in that order) iff Rxy holds at every world where x and y both exist.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 2)
     A reaction: I find this bizarre. Not only does this seem to me to have nothing whatever to do with essence, but also the relation might hold even though it is a purely contingent matter. All rabbits are a reasonable distance from the local star. Essence of rabbit?
9. Objects / D. Essence of Objects / 7. Essence and Necessity / c. Essentials are necessary
Trivially essential properties are existence, self-identity, and de dicto necessities [Forbes,G]
     Full Idea: The main groups of trivially essential properties are (a) existence, self-identity, or their consequences in S5; and (b) properties possessed in virtue of some de dicto necessary truth.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 2)
     A reaction: He adds 'extraneously essential' properties, which also strike me as being trivial, involving relations. 'Is such that 2+2=4' or 'is such that something exists' might be necessary, but they don't, I would say, have anything to do with essence.
9. Objects / D. Essence of Objects / 9. Essence and Properties
A property is 'extraneously essential' if it is had only because of the properties of other objects [Forbes,G]
     Full Idea: P is 'extraneously essential' to x iff it is possessed by x at any world w only in virtue of the possession at w of certain properties by other objects.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 2)
     A reaction: I would say that these are the sorts of properties which have nothing to do with being essential, even if they are deemed to be necessary.
9. Objects / D. Essence of Objects / 11. Essence of Artefacts
One might be essentialist about the original bronze from which a statue was made [Forbes,G]
     Full Idea: In the case of artefacts, there is an essentialism about original matter; for instance, it would be said of any particular bronze statue that it could not have been cast from a totally different quantity of bronze.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 3)
     A reaction: Forbes isn't endorsing this, and it doesn't sound convincing. He quotes the thought 'I wish I had made this pot from a different piece of clay'. We might corrupt a statue by switching bronze, but I don't think the sculptor could do so.
10. Modality / C. Sources of Modality / 4. Necessity from Concepts
The source of de dicto necessity is not concepts, but the actual properties of the thing [Forbes,G]
     Full Idea: It is widely held that the source of de dicto necessity is in concepts, ..but I deny this... even with simple de dicto necessities, the source of the necessity is to be found in the properties to which the predicates of the de dicto truth refer.
     From: Graeme Forbes (In Defense of Absolute Essentialism [1986], 3)
     A reaction: It is normal nowadays to say this about de re necessities, but this is more unusual.
14. Science / A. Basis of Science / 3. Experiment
Science is common sense, with a sophisticated method [Quine]
     Full Idea: Sciences differ from common sense only in the degree of methodological sophistication.
     From: Willard Quine (Natural Kinds [1969], p.129)
     A reaction: Science is normal thinking about the world, but it is teamwork, with the bar set very high.
14. Science / C. Induction / 1. Induction
Induction is just more of the same: animal expectations [Quine]
     Full Idea: Induction is essentially only more of the same: animal expectation or habit formation.
     From: Willard Quine (Natural Kinds [1969], p.125)
     A reaction: My working definition of induction is 'learning from experience', but that doesn't disagree with Quine. Lipton has a richer account of different types of induction. Quine's point is that it rests on resemblance.
Induction relies on similar effects following from each cause [Quine]
     Full Idea: Induction expresses our hopes that similar causes will have similar effects.
     From: Willard Quine (Natural Kinds [1969], p.125)
     A reaction: Some top philosophers are also top teachers, and Quine was one of them, in his writings. He boils it down for the layman. Once again, he is pointing to the fundamental role of the similarity relation.
14. Science / C. Induction / 5. Paradoxes of Induction / a. Grue problem
Grue is a puzzle because the notions of similarity and kind are dubious in science [Quine]
     Full Idea: What makes Goodman's example a puzzle is the dubious scientific standing of a general notion of similarity, or of kind.
     From: Willard Quine (Natural Kinds [1969], p.116)
     A reaction: Illuminating. It might be best expressed as revealing a problem with sortal terms, as employed by Geach, or by Wiggins. Grue is a bit silly, but sortals are subject to convention and culture. 'Natural' properties seem needed.
15. Nature of Minds / C. Capacities of Minds / 7. Seeing Resemblance
Similarity is just interchangeability in the cosmic machine [Quine]
     Full Idea: Things are similar to the extent that they are interchangeable parts of the cosmic machine.
     From: Willard Quine (Natural Kinds [1969], p.134)
     A reaction: This is a major idea for Quine, because it is a means to gradually eliminate the fuzzy ideas of 'resemblance' or 'similarity' or 'natural kind' from science. I love it! Two tigers are same insofar as they are substitutable.
General terms depend on similarities among things [Quine]
     Full Idea: The usual general term, whether a common noun or a verb or an adjective, owes its generality to some resemblance among the things referred to.
     From: Willard Quine (Natural Kinds [1969], p.116)
     A reaction: Quine has a nice analysis of the basic role of similarity in a huge amount of supposedly strict scientific thought.
To learn yellow by observation, must we be told to look at the colour? [Quine]
     Full Idea: According to the 'respects' view, our learning of yellow by ostension would have depended on our first having been told or somehow apprised that it was going to be a question of color.
     From: Willard Quine (Natural Kinds [1969], p.122)
     A reaction: Quine suggests there is just one notion of similarity, and respects can be 'abstracted' afterwards. Even the ontologically ruthless Quine admits psychological abstraction!
Standards of similarity are innate, and the spacing of qualities such as colours can be mapped [Quine]
     Full Idea: A standard of similarity is in some sense innate. The spacing of qualities (such as red, pink and blue) can be explored and mapped in the laboratory by experiments. They are needed for all learning.
     From: Willard Quine (Natural Kinds [1969], p.123)
     A reaction: This reasserts Hume's original point in more scientific terms. It is one of the undeniable facts about our perceptions of qualities and properties, no matter how platonist your view of universals may be.
19. Language / C. Assigning Meanings / 3. Predicates
Projectible predicates can be universalised about the kind to which they refer [Quine]
     Full Idea: 'Projectible' predicates are predicates F and G whose shared instances all do count, for whatever reason, towards confirmation of 'All F are G'. ….A projectible predicate is one that is true of all and only the things of a kind.
     From: Willard Quine (Natural Kinds [1969], p.115-6)
     A reaction: Both Quine and Goodman are infuriatingly brief about the introduction of this concept. 'Red' is true of all ripe tomatoes, but not 'only' of them. Hardly any predicates are true only of one kind. Is that a scholastic 'proprium'?
24. Political Theory / A. Basis of a State / 4. Original Position / a. Original position
Rawls's theory cannot justify liberalism, since it presupposes free and equal participants [Charvet]
     Full Idea: Rawls's theory presupposes that the contractors are conceived, and conceive themselves, to be free and equal persons. Consequently, the theory cannot be presented as a justificatory theory of liberalism.
     From: John Charvet (Liberalism: the basics [2019], 14)
     A reaction: Nice. If you imagine diverse groups with many strong beliefs coming together to form a society, Rawls is asking them all to become liberals before they all decide how to live together.
24. Political Theory / A. Basis of a State / 4. Original Position / b. Veil of ignorance
People with strong prior beliefs would have nothing to do with a veil of ignorance [Charvet]
     Full Idea: Why would a group of people with strong beliefs (e.g. religious beliefs) agree to debate the problem of what norms should govern their association from behind a veil of ignorance? …They would not accept the veil of ignorance as fair.
     From: John Charvet (Liberalism: the basics [2019], 14)
     A reaction: Nice. Rawls's experiment assumes liberal people with very few beliefs. No racial supremacist is going to enter a society in which they may be of a different race. Charvet says the entrants would all need to be pluralists about the good.
24. Political Theory / D. Ideologies / 3. Conservatism
Societies need shared values, so conservatism is right if rational discussion of values is impossible [Charvet]
     Full Idea: Were it true that rational discussion of values is impossible, then a conservative attitude would seem to be the only viable position. Some set of common values is necessary to maintain the unity of a political society.
     From: John Charvet (Liberalism: the basics [2019], 07)
     A reaction: Better to say that the less values can be both discussed and changed the stronger is the case for a degree of conservatism. Conservatives tend to favour values asserted by authority, rather than by popular (undiscussed) consensus.
24. Political Theory / D. Ideologies / 4. Social Utilitarianism
The universalism of utilitarianism implies a world state [Charvet]
     Full Idea: Utilitarianism is a universalist ethic, so the political realisation of this ethic would seem to be a world state seeking to maximise happiness for the world's population.
     From: John Charvet (Liberalism: the basics [2019], 12)
     A reaction: It certainly doesn't seem to favour the citizens of the state where it is implemented, since miserable people just across the border would have priority, and all miserable migrants must be welcomed. There is no loyalty to citizens.
24. Political Theory / D. Ideologies / 6. Liberalism / a. Liberalism basics
Liberals value freedom and equality, but the society itself must decide on its values [Charvet]
     Full Idea: While freedom and equality are liberal values …they are fundamental regulative ideas of an independent society that is self-regulating …and decides what its own social and political arrangements should be.
     From: John Charvet (Liberalism: the basics [2019], 06)
     A reaction: So the central political activity is persuasion, not enforcement. Illiberal societies all contain liberal individuals.
24. Political Theory / D. Ideologies / 6. Liberalism / b. Liberal individualism
Modern libertarian societies still provide education and some housing [Charvet]
     Full Idea: No society today is libertarian in the extreme sense. Even the freest economically, such as Singapore have their governments provide education services and public housing.
     From: John Charvet (Liberalism: the basics [2019], 05)
     A reaction: There is a good argument that many other services should be provided by a libertarian state, on the grounds that it is more efficient, and the services must otherwise paid for by much higher salaries.
Liberalism needs people to either have equal autonomy, or everyone to have enough autonomy [Charvet]
     Full Idea: To get a liberal society one would have to claim that either everyone possesses autonomy to an equal degree or that everyone possesses a threshold level of the capacity that entitles them to enjoy the full liberal rights.
     From: John Charvet (Liberalism: the basics [2019], 07)
     A reaction: This leaves out the more right-wing attitude that people can increase their capacity for autonomy if they are forced to stand on their own feet. A liberal society must decide how to treat persons incapable of proper autonomy.
Kant places a higher value on the universal rational will than on the people asserting it [Charvet]
     Full Idea: For Kant what is of absolute worth is the universal rational will which become an individual's actual will. Insofar as the individual fails to will the universal, they have no absolute worth, so whether or not they exist is unimportant.
     From: John Charvet (Liberalism: the basics [2019], 14)
     A reaction: A lovely demolition of the claims of Kant to be the patriarch of liberalism! Liberalism must place supreme value on each individual, not on some abstracted realm of pure reason and moral good. Liberals are motivated by love, not reason.
24. Political Theory / D. Ideologies / 6. Liberalism / c. Liberal equality
Liberalism asserts maximum freedom, but that must be equal for all participants [Charvet]
     Full Idea: Liberalism attaches fundamental value to leaving individuals as free as possible … - but there is another fundamental value implicit in this idea - the equal status of the participants in the practice. By this I mean that they all have the same rights.
     From: John Charvet (Liberalism: the basics [2019], Intro)
     A reaction: Libertarian liberalism (e.g. Nozick) only asserts the fundament principle of freedom, but such a society swiftly deprives most of its members of those very freedoms. Egalitarian Liberalism should be our default political ideology.
Egalitarian liberals prefer equality (either of input or outcome) to liberty [Charvet]
     Full Idea: Rather than libertarianism, egalitarian liberals promote equality, either of outcomes (of happiness or of well-being), or of inputs (such as opportunities, capacities or resources), which they favour ahead of freedom.
     From: John Charvet (Liberalism: the basics [2019], 06)
     A reaction: This is my team, I think. I think I'm a liberal who thinks liberty is a bit overrated. Equal outcome according to capacity (promoted by Nussbaum) seems attractive.
24. Political Theory / D. Ideologies / 6. Liberalism / e. Liberal community
Liberals promote community and well-being - because all good societies need them [Charvet]
     Full Idea: Community and well-being are not specifically liberal values. They are values any independent political society must pursue whether it is a liberal society or not.
     From: John Charvet (Liberalism: the basics [2019], Intro)
     A reaction: This seems, at a stroke, to undermine the familiar debate between liberals and communitarians. I've switched to the former from the latter, because communitarians is potentially too paternalistic and conservative. Persuade individuals to be communal!
24. Political Theory / D. Ideologies / 6. Liberalism / f. Multiculturalism
Identity multiculturalism emerges from communitarianism, preferring community to humanity [Charvet]
     Full Idea: Identity-based multiculturalism developed from communitarianism. …People come to consciousness of themselves as members of some community before they identify themselves as members of the human race.
     From: John Charvet (Liberalism: the basics [2019], 08)
     A reaction: This is 'identity politics', which Carvet sees as a problem from liberalism. Is it more important to be a woman or a Muslim or a Scot than to be a human being? It seems to create institutional antagonisms.
24. Political Theory / D. Ideologies / 7. Communitarianism / b. Against communitarianism
For communitarians it seems that you must accept the culture you are born into [Charvet]
     Full Idea: Communitarians have difficulty avoiding the relativist trap. It seems they must claim that if one is born into a liberal society one cannot but be a liberal, and if one is born into a communist society one cannot but be a communist.
     From: John Charvet (Liberalism: the basics [2019], 08)
     A reaction: Anyone who accepts the Hegelian view of history and culture seems doomed to such relativism, and Hegel is a communitarian precursor. This is a good reason for me to reject communitarianism, after a long flirtation. We can criticise our own culture.
24. Political Theory / D. Ideologies / 9. Communism
Give by ability and receive by need, rather than a free labour market [Charvet]
     Full Idea: Only the most extreme collective socialism denies the freedom to sell one's labour power and buy that of others, under the communist slogan 'from each according to his ability, and to each according to his needs'.
     From: John Charvet (Liberalism: the basics [2019], 05)
     A reaction: [He cites Marx 'Critique of the Gotha Programme'] I would guess that this practice is not abnormal in old traditional villages, though a community would be tempted to reward highly a very successful member.
25. Social Practice / A. Freedoms / 3. Free speech
Allowing defamatory speech is against society's interests, by blurring which people are trustworthy [Charvet]
     Full Idea: The argument for restricting defamatory speech is that unrestricted speech makes it impossible, or too difficult, to distinguish between those who deserve a trustworthy reputation and those who don't - a distinction in society's best interests.
     From: John Charvet (Liberalism: the basics [2019], 03)
     A reaction: A nice example of appeal to the common good, in opposition to the normal freedoms of liberalism. An example of the Prisoner's Dilemma. Should assertion of the common good of a group be a prime value of liberalism?
25. Social Practice / A. Freedoms / 5. Freedom of lifestyle
'Freedom from' is an empty idea, if the freedom is not from impediments to my desires [Charvet]
     Full Idea: Berlin's distinction of 'freedom from' and 'freedom to' is worthless …because to say that I want to be free from something for absolutely no reason makes no sense. Unfreedom is being blocked from what I want to do, which ceases if I no longer want it.
     From: John Charvet (Liberalism: the basics [2019], 07)
     A reaction: [compressed] The government could guarantee us against attacks by albatrosses, but we would hardly have a national holiday to celebrate the freedom. Still, there is freedom from incoming troubles, and freedom to output things.
Positive freedom can lead to coercion, if you are forced to do what you chose to do [Charvet]
     Full Idea: Berlin saw positive freedom as a justification for illiberal coercion. If I am positively free only in doing X, then if I am forced to do X, I will still be free.
     From: John Charvet (Liberalism: the basics [2019], 07)
     A reaction: I suppose Berlin is thinking of Russian farmers, who wanted to farm, but then found they were forced to do what they were going to do anyway. It's better than being forced to do what you didn't want to do. Forcing clearly isn't freedom.
First level autonomy is application of personal values; second level is criticising them [Charvet]
     Full Idea: First level autonomy is being able to apply one's scheme of values to one's actions and life; second level autonomy is being able to subject those values to critical evaluation.
     From: John Charvet (Liberalism: the basics [2019], 10)
     A reaction: Charvet sees this as a key issue for liberalism. How do you treat citizens who cannot advance beyond the first level? He mentions the elitism of Plato's Republic that results.
25. Social Practice / B. Equalities / 1. Grounds of equality
Mere equality, as in two trees being the same height, has no value at all [Charvet]
     Full Idea: That the relation of equality might be considered a value in itself is an absurdity. Would the equality of blinding the only sighted person in a blind society be good? Is it inherently good that two trees are the same height? This is nonsense.
     From: John Charvet (Liberalism: the basics [2019], 08)
     A reaction: He cites Temkin 1993 as defending the blinding example! Obviously equality is only possible in certain respects (though electrons might be equal in all respects). So the point is to identify the important respects. The rest is rhetoric.
25. Social Practice / B. Equalities / 4. Economic equality
Inequalities are worse if they seem to be your fault, rather than social facts [Charvet]
     Full Idea: Inequality is worse in a meritocracy than in a stratified society, because everyone enjoys a formal equality of status and your position in the social order is due to your merit or lack of merit, so you have only yourself to blame for being at the bottom.
     From: John Charvet (Liberalism: the basics [2019], 10)
     A reaction: This is the simple point that it is worse to lack some good if you might have possessed it, rather than it being entirely out of reach. It also makes the false assumption that people are largely responsible for their merit or lack of it (ignoring luck).
Money allows unlimited inequalities, and we obviously all agree to money [Charvet]
     Full Idea: The introduction of money allows people to accumulate wealth without limit. Since money only works through everyone's agreement …everyone can be taken to have agreed to the consequences of money in the unequal distribution of wealth.
     From: John Charvet (Liberalism: the basics [2019], 11)
     A reaction: [Locke] Presumably large inequalities of possessions and territory were possible before money, but there was at least an upper limit. The current owner of Amazon may end up with more wealth than the whole of the rest of humanity combined.
25. Social Practice / D. Justice / 2. The Law / b. Rule of law
The rule of law is mainly to restrict governments [Charvet]
     Full Idea: The rule of law is directed at the restriction of the power of governments as much, if not more, then the power of private individuals.
     From: John Charvet (Liberalism: the basics [2019], 02)
     A reaction: The more powerful you are the more restricting is the rule of law. Every government is tempted to change the law to expand its powers. The UK government has just legislated to restrict public demonstrations. Law is the people's weapon against autocrats.
The 1689 Bill of Rights denied the monarch new courts, or the right to sit as judge [Charvet]
     Full Idea: The 1689 Bill of Rights said the monarch could not create new courts of law, or act as a judge at law.
     From: John Charvet (Liberalism: the basics [2019], 02)
     A reaction: The background was the abolition of the court of Star Chamber in 1641, which had been secret, severe, and controlled by the monarch. Is it possible to create a new type of court, or are we stuck with the current ones?
From 1701 only parliament could remove judges, whose decisions could not be discussed [Charvet]
     Full Idea: In 1701 UK judges were given secure tenure, being removable only by parliament which at the same time undertook to follow a convention not to discuss particular judicial decisions.
     From: John Charvet (Liberalism: the basics [2019], 02)
     A reaction: In recent years the UK Daily Mail published the pictures of three judges, and labelled them 'traitors' because of their verdict about leaving the European Union.
Justice superior to the rule of law is claimed on behalf of the workers, or the will of the nation [Charvet]
     Full Idea: Communist leaders justify themselves as the embodiment of the people's will as workers, and fascist leaders as expressing the will of the nation. Both believe their policies contain a superior justice on this basis.
     From: John Charvet (Liberalism: the basics [2019], 02)
     A reaction: [compressed] A neat summary of why the rule of law might be rejected (other than by simple tyrrany justified only by force). In modern democracies recent right-wing governments have pushed back the law and attacked justice on this basis.
The rule of law mainly benefits those with property and liberties [Charvet]
     Full Idea: A rule of law regime will primarily benefit those possessing property and liberty rights.
     From: John Charvet (Liberalism: the basics [2019], 02)
     A reaction: Important. It's no good fighting for the law if the law doesn't protect what you have got, or if you have got nothing to protect. Important steps must precede assertion of the rule of law.
25. Social Practice / E. Policies / 3. Welfare provision
Welfare is needed if citizens are to accept the obligations of a liberal state [Charvet]
     Full Idea: The welfare state provides the background conditions under which it is reasonable to expect one's fellow citizens to commit to liberal principles of interaction, even if those conditions can only be achieved through a degree of compulsion.
     From: John Charvet (Liberalism: the basics [2019], 05)
     A reaction: You cannot expect people to accept the role of 'free' citizen if that is likely to result in swift misery. A liberal state will only command loyalty if it has a safety net. Fully committed liberalism implies modest socialism.
26. Natural Theory / B. Natural Kinds / 1. Natural Kinds
Quine probably regrets natural kinds now being treated as essences [Quine, by Dennett]
     Full Idea: The concept of natural kinds was reintroduced by Quine, who may now regret the way it has become a stand-in for the dubious but covertly popular concept of essences.
     From: report of Willard Quine (Natural Kinds [1969]) by Daniel C. Dennett - Consciousness Explained 12.2 n2
     A reaction: He is right that Quine would regret it, and he is right that we can't assume that there are necessary essences just because there seem to be stable natural kinds, but personally I am an essentialist, so I'm not that bothered.
If similarity has no degrees, kinds cannot be contained within one another [Quine]
     Full Idea: If similarity has no degrees there is no containing of kinds within broader kinds. If colored things are a kind, they are similar, but red things are too narrow for a kind. If red things are a kind, colored things are not similar, and it's too broad.
     From: Willard Quine (Natural Kinds [1969], p.118)
     A reaction: [compressed] I'm on Quine's side with this. We glibly talk of 'kinds', but the criteria for sorting things into kinds seems to be a mess. Quine goes on to offer a better account than the (diadic, yes-no) one rejected here.
Comparative similarity allows the kind 'colored' to contain the kind 'red' [Quine]
     Full Idea: With the triadic relation of comparative similarity, kinds can contain one another, as well as overlapping. Red and colored things can both count as kinds. Colored things all resemble one another, even though less than red things do.
     From: Willard Quine (Natural Kinds [1969], p.119)
     A reaction: [compressed] Quine claims that comparative similarity is necessary for kinds - that there be some 'foil' in a similarity - that A is more like C than B is.
26. Natural Theory / B. Natural Kinds / 3. Knowing Kinds
You can't base kinds just on resemblance, because chains of resemblance are a muddle [Quine]
     Full Idea: If kinds are based on similarity, this has the Imperfect Community problem. Red round, red wooden and round wooden things all resemble one another somehow. There may be nothing outside the set resembling them, so it meets the definition of kind.
     From: Willard Quine (Natural Kinds [1969], p.120)
     A reaction: [ref. to Goodman 'Structure' 2nd 163- , which attacks Carnap on this] This suggests an invocation of Wittgenstein's family resemblance, which won't be much help for natural kinds.
26. Natural Theory / D. Laws of Nature / 4. Regularities / a. Regularity theory
It is hard to see how regularities could be explained [Quine]
     Full Idea: Why there have been regularities is an obscure question, for it is hard to see what would count as an answer.
     From: Willard Quine (Natural Kinds [1969], p.126)
     A reaction: This is the standard pessimism of the 20th century Humeans, but it strikes me as comparable to the pessimism about science found in Locke and Hume. Regularities are explained all the time by scientists, though the lowest level may be hopeless.