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All the ideas for 'What is Logic?st1=Ian Hacking', 'Essays on Intellectual Powers 2: Senses' and 'Animal Rights and Wrongs'

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54 ideas

2. Reason / D. Definition / 3. Types of Definition
A decent modern definition should always imply a semantics [Hacking]
     Full Idea: Today we expect that anything worth calling a definition should imply a semantics.
     From: Ian Hacking (What is Logic? [1979], §10)
     A reaction: He compares this with Gentzen 1935, who was attempting purely syntactic definitions of the logical connectives.
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / d. Basic theorems of PL
'Thinning' ('dilution') is the key difference between deduction (which allows it) and induction [Hacking]
     Full Idea: 'Dilution' (or 'Thinning') provides an essential contrast between deductive and inductive reasoning; for the introduction of new premises may spoil an inductive inference.
     From: Ian Hacking (What is Logic? [1979], §06.2)
     A reaction: That is, inductive logic (if there is such a thing) is clearly non-monotonic, whereas classical inductive logic is monotonic.
Gentzen's Cut Rule (or transitivity of deduction) is 'If A |- B and B |- C, then A |- C' [Hacking]
     Full Idea: If A |- B and B |- C, then A |- C. This generalises to: If Γ|-A,Θ and Γ,A |- Θ, then Γ |- Θ. Gentzen called this 'cut'. It is the transitivity of a deduction.
     From: Ian Hacking (What is Logic? [1979], §06.3)
     A reaction: I read the generalisation as 'If A can be either a premise or a conclusion, you can bypass it'. The first version is just transitivity (which by-passes the middle step).
Only Cut reduces complexity, so logic is constructive without it, and it can be dispensed with [Hacking]
     Full Idea: Only the cut rule can have a conclusion that is less complex than its premises. Hence when cut is not used, a derivation is quite literally constructive, building up from components. Any theorem obtained by cut can be obtained without it.
     From: Ian Hacking (What is Logic? [1979], §08)
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
The various logics are abstractions made from terms like 'if...then' in English [Hacking]
     Full Idea: I don't believe English is by nature classical or intuitionistic etc. These are abstractions made by logicians. Logicians attend to numerous different objects that might be served by 'If...then', like material conditional, strict or relevant implication.
     From: Ian Hacking (What is Logic? [1979], §15)
     A reaction: The idea that they are 'abstractions' is close to my heart. Abstractions from what? Surely 'if...then' has a standard character when employed in normal conversation?
5. Theory of Logic / A. Overview of Logic / 5. First-Order Logic
A limitation of first-order logic is that it cannot handle branching quantifiers [Hacking]
     Full Idea: Henkin proved that there is no first-order treatment of branching quantifiers, which do not seem to involve any idea that is fundamentally different from ordinary quantification.
     From: Ian Hacking (What is Logic? [1979], §13)
     A reaction: See Hacking for an example of branching quantifiers. Hacking is impressed by this as a real limitation of the first-order logic which he generally favours.
First-order logic is the strongest complete compact theory with Löwenheim-Skolem [Hacking]
     Full Idea: First-order logic is the strongest complete compact theory with a Löwenheim-Skolem theorem.
     From: Ian Hacking (What is Logic? [1979], §13)
5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
Second-order completeness seems to need intensional entities and possible worlds [Hacking]
     Full Idea: Second-order logic has no chance of a completeness theorem unless one ventures into intensional entities and possible worlds.
     From: Ian Hacking (What is Logic? [1979], §13)
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
With a pure notion of truth and consequence, the meanings of connectives are fixed syntactically [Hacking]
     Full Idea: My doctrine is that the peculiarity of the logical constants resides precisely in that given a certain pure notion of truth and consequence, all the desirable semantic properties of the constants are determined by their syntactic properties.
     From: Ian Hacking (What is Logic? [1979], §09)
     A reaction: He opposes this to Peacocke 1976, who claims that the logical connectives are essentially semantic in character, concerned with the preservation of truth.
5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
Perhaps variables could be dispensed with, by arrows joining places in the scope of quantifiers [Hacking]
     Full Idea: For some purposes the variables of first-order logic can be regarded as prepositions and place-holders that could in principle be dispensed with, say by a system of arrows indicating what places fall in the scope of which quantifier.
     From: Ian Hacking (What is Logic? [1979], §11)
     A reaction: I tend to think of variables as either pronouns, or as definite descriptions, or as temporary names, but not as prepositions. Must address this new idea...
5. Theory of Logic / J. Model Theory in Logic / 3. Löwenheim-Skolem Theorems
If it is a logic, the Löwenheim-Skolem theorem holds for it [Hacking]
     Full Idea: A Löwenheim-Skolem theorem holds for anything which, on my delineation, is a logic.
     From: Ian Hacking (What is Logic? [1979], §13)
     A reaction: I take this to be an unusually conservative view. Shapiro is the chap who can give you an alternative view of these things, or Boolos.
7. Existence / A. Nature of Existence / 1. Nature of Existence
Accepting the existence of anything presupposes the notion of existence [Reid]
     Full Idea: The belief of the existence of anything seems to suppose a notion of existence - a notion too abstract, perhaps, to enter into the mind of an infant.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 05)
     A reaction: But even a small infant has to cope with the experience of waking up from a dream. I don't see how existence can be anything other than a primitive concept in any system of ontology.
11. Knowledge Aims / A. Knowledge / 4. Belief / b. Elements of beliefs
Having beliefs involves recognition, expectation and surprise [Scruton]
     Full Idea: With the concept of belief (e.g. in animals) comes recognition, expectation and surprise.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.15)
     A reaction: A good observation. It is always tempting to see mental faculties in isolation, but each one drags along other capacities with it. Looks a bit holistic.
11. Knowledge Aims / A. Knowledge / 4. Belief / f. Animal beliefs
If an animal has beliefs, that implies not only that it can make mistakes, but that it can learn from them [Scruton]
     Full Idea: To say that an animal has beliefs is to imply not just that it can make mistakes, but also that it can learn from them.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.15)
     A reaction: A bold claim which is hard to substantiate. Seems right, though. Why would they change a belief? It can't be a belief if it isn't changeable. That would be an instinct.
12. Knowledge Sources / A. A Priori Knowledge / 2. Self-Evidence
Truths are self-evident to sensible persons who understand them clearly without prejudice [Reid]
     Full Idea: Self-evident propositions are those which appear evident to every man of sound understanding who apprehends the meaning of them distinctly, and attends to them without prejudice.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 10)
     A reaction: I suspect that there are some truths which are self-evident to dogs. There are also truths which are self-evident to experts, but not to ordinary persons of good understanding. Self-evidence is somewhat contextual. Self-evidence can be empirical.
12. Knowledge Sources / B. Perception / 1. Perception
Sensation is not committed to any external object, but perception is [Reid]
     Full Idea: Sensation, by itself, implies neither the conception nor belief of any external object. ...Perception implies a conviction and belief of something external. ...Things so different in their nature ought to be distinguished.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], II.16), quoted by Barry Maund - Perception
     A reaction: Maund sees this as the origin of the two-stage view of perception, followed by Chisholm, Evans, Dretske and Lowe. It implies that 'looks', 'tastes', 'sounds' etc. are ambiguous words, having either phenomenal or realist meanings. I like it.
Perception (which involves an assessment) is a higher state than sensation [Scruton]
     Full Idea: Perception is a higher state than sensation: it involves not just a response to the outer world, but also an assessment of it.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.14)
     A reaction: This seems to me a simple but really important distinction, even though it wickedly uses the word 'higher', which Greeks like but post-Humeans struggle with. But we all know it is higher, don't we?
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities
Primary qualities are the object of mathematics [Reid]
     Full Idea: The primary qualities are the object of the mathematical sciences.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 17)
     A reaction: He spells out this crucial point, which is not so obvious in Locke. The sciences totally rely on the primary qualities, so it is ridiculous to reject the distinction (which Reid accepts).
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities
Secondary qualities conjure up, and are confused with, the sensations which produce them [Reid]
     Full Idea: The thought of a secondary quality always carries us back to the sensation which it produces.We give the same name to both, and are apt to confound them.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 17)
     A reaction: 'Redness', for example. Reid puts the point very nicely. Secondary qualities are not entirely mental; they pick out features of the world, but are much harder to understand than the primary qualities. The qualia question lurks.
12. Knowledge Sources / B. Perception / 5. Interpretation
It is unclear whether a toothache is in the mind or in the tooth, but the word has a single meaning [Reid]
     Full Idea: If it be made a question whether the toothache be in the mind that feels it, or in tooth that is affected, much might be said on both sides, while it is not observed that the word has two meanings.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 18)
     A reaction: I'm glad Reid was struck by the weird phenomenon of the brain apparently 'projecting' a pain into a tooth. Presumably before the brain's role was known, people were unaware of this puzzle. There certainly are not two distinct experiences.
12. Knowledge Sources / E. Direct Knowledge / 1. Common Sense
Reid is seen as the main direct realist of the eighteenth century [Reid, by Robinson,H]
     Full Idea: Reid is often represented by modern opponents of the empiricists as the outstanding protagonist of direct or naïve realism and common sense in the eighteenth century.
     From: report of Thomas Reid (Essays on Intellectual Powers 2: Senses [1785]) by Howard Robinson - Perception 1.6
     A reaction: Robinson does not deny that this is Reid's view. Keith Lehrer is a great fan of Reid. Personally I think direct realism is quite clearly false, so I find myself losing interest in Reid's so-called 'common sense'.
13. Knowledge Criteria / B. Internal Justification / 3. Evidentialism / a. Evidence
People dislike believing without evidence, and try to avoid it [Reid]
     Full Idea: To believe without evidence is a weakness which every man is concerned to avoid, and which every man wishes to avoid.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 20)
     A reaction: It seems to be very common, though, for people to believe things on incredibly flimsy evidence, if they find the belief appealing. This is close to Clifford's Principle, but not quite as dogmatic.
13. Knowledge Criteria / B. Internal Justification / 5. Coherentism / b. Pro-coherentism
If non-rational evidence reaches us, it is reason which then makes use of it [Reid]
     Full Idea: If Nature gives us information of things that concern us, by other means that by reasoning, reason itself will direct us to receive that information with thankfulness, and to make the best use of it.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 20)
     A reaction: This is more of a claim than an argument, but it is hard to see how anything could even be seen as evidence if some sort of rational judgement has not been made. The clever detective sees which facts are evidence.
15. Nature of Minds / B. Features of Minds / 1. Consciousness / d. Purpose of consciousness
There is consciousness whenever behaviour must be explained in terms of mental activity [Scruton]
     Full Idea: There is consciousness whenever behaviour must be explained in terms of mental activity.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.23)
     A reaction: Not a point that would trouble an eliminativist, as it sounds suspiciously circular or question-begging.
16. Persons / A. Concept of a Person / 2. Persons as Responsible
Our concept of a person is derived from Roman law [Scruton]
     Full Idea: Our concept of a person is derived from Roman law.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.28)
     A reaction: Interesting. I don't believe Roman legislators invented it, so where did it originate? Interesting that it is legalistic - a thing to which rights can accrue. Compare character, to which virtues accrue.
17. Mind and Body / B. Behaviourism / 4. Behaviourism Critique
Conditioning may change behaviour without changing the mind [Scruton]
     Full Idea: Conditioning involves a change of behaviour, but not necessarily a change of mind.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.16)
     A reaction: I am inclined to doubt this. If I was conditioned in some way, I would expect my conscious state to change as well as my behaviour.
18. Thought / A. Modes of Thought / 3. Emotions / c. Role of emotions
An emotion is a motive which is also a feeling [Scruton]
     Full Idea: An emotion is a motive which is also a feeling.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.17)
     A reaction: What is a motive without feeling? A universalised judgment, perhaps. Which comes first, the motivation or the feeling?
18. Thought / A. Modes of Thought / 5. Rationality / c. Animal rationality
Do we use reason to distinguish people from animals, or use that difference to define reason? [Scruton]
     Full Idea: The difficulty of defining reason suggests that while pretending to use it to define the difference between humans and animals, they are actually using that difference to define reason.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.19)
     A reaction: Too pessimistic. We are perfectly capable of saying there is no significant difference between us and an alien. We have obvious abilities, which we can partly specify.
18. Thought / E. Abstraction / 2. Abstracta by Selection
Only mature minds can distinguish the qualities of a body [Reid]
     Full Idea: I think it requires some ripeness of understanding to distinguish the qualities of a body from the body; perhaps this distinction is not made by brutes, or by infants.
     From: Thomas Reid (Essays on Intellectual Powers 2: Senses [1785], 19)
     A reaction: I'm glad the brutes get a mention in his assessment of these questions. I take such thinking to arise from what can be labelled the faculty of abstraction, which presumably only appears in a mature brain. It is second-level thinking.
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / a. Preconditions for ethics
All moral life depends ultimately on piety, which is our recognition of our own dependence [Scruton]
     Full Idea: The three forms of moral life (respect for persons, the pursuit of virtue and natural sympathy) all depend, in the last analysis, on piety, which is the deep-down recognition of our frailty and dependence.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.56)
     A reaction: MacIntyre agrees. 'Piety' is an odd word, which attempts to link the point to religious teachings. 'Dependence' seems an adequate term. But can fully independent creatures dispense with morality? I think not.
23. Ethics / B. Contract Ethics / 1. Contractarianism
Kant's Moral Law is the rules rational beings would accept when trying to live by agreement [Scruton]
     Full Idea: We can see the Kantian 'Moral Law' as consisting precisely in those rules which rational beings would accept, when attempting to live by agreement.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.30)
     A reaction: If this combines Kantian notions of duty with the obligations of contracts, it is the core of a very powerful moral theory. See the work of Tim Scanlon. Classic problems are still the weak, animals and free riders.
23. Ethics / C. Virtue Theory / 3. Virtues / a. Virtues
The modern virtues are courage, prudence, wisdom, temperance, justice, charity and loyalty [Scruton]
     Full Idea: The antique virtues of courage, prudence, wisdom, temperance and justice, amplified by Christian charity and pagan loyalty, still form the core idea of human excellence.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.33)
     A reaction: I always think sense of humour has become a key modern virtue. Where did that come from? Maybe a sense of irony is a good thing. How about efficiency (which is Plato's idea of justice!)?
23. Ethics / C. Virtue Theory / 3. Virtues / c. Justice
Only just people will drop their own self-interests when faced with an impartial verdict [Scruton]
     Full Idea: Only just people will act on the impartial verdict when their own interests conflict with it.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.61)
     A reaction: The Kantian account of the virtues. Virtues are seen in the acceptance of a range of obvious human duties. Very helpful point if one is aiming for one unified theory of morality.
23. Ethics / C. Virtue Theory / 3. Virtues / f. Compassion
Sympathy can undermine the moral order just as much as crime does [Scruton]
     Full Idea: A person who lives by sympathy may undermine the moral order as effectively as the one who lives by crime.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.54)
     A reaction: A slightly chilling remark. Presumably one should not feel too much for suffering which is deserved. What about unavoidable suffering? It is certainly important to see that some suffering is morally good (e.g. grief or remorse).
23. Ethics / D. Deontological Ethics / 2. Duty
That which can only be done by a callous person, ought not to be done [Scruton]
     Full Idea: That which can only be done by a callous person, ought not to be done.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.86)
     A reaction: The problem cases all arise in wartime. Ideally we want to show sympathy even when being necessarily ruthless, but in practice we send the callous ones to do the horrible deed.
23. Ethics / D. Deontological Ethics / 3. Universalisability
As soon as we drop self-interest and judge impartially, we find ourselves agreeing about conflicts [Scruton]
     Full Idea: As soon as we set our own interests aside and look on human relations with the eye of the impartial judge, we find ourselves agreeing over the rights and wrongs of any conflict.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.59)
     A reaction: A nice, and fairly plausible, defence of Kantian ethics. Maybe the UN should actually settle all disputes, instead of just peace-keeping. The idea merely describes the function of the law, and especially an independent judiciary.
23. Ethics / E. Utilitarianism / 1. Utilitarianism
Utilitarianism is wrong precisely because it can't distinguish animals from people [Scruton]
     Full Idea: It was precisely the inability of utilitarianism to explain the distinction between animals and people which led to its rejection.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.50)
     A reaction: A nice turning of the tables, rejecting the utilitarian pride in incorporating animals into their theory where others (like Kant) reject them. Yet in one respect (suffering) they are inescapably very like us.
Utilitarianism says we can't blame Stalin yet, but such a theory is a sick joke [Scruton]
     Full Idea: Stalin and Hitler justified their actions in utilitarian terms, ..and no one can accuse them, for who knows what the long-term effects of their actions might be? But a morality which can't pass final judgement on Hitler or Stalin is a kind of sick joke.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.52)
     A reaction: A powerful argument against simplistic consequentialism. We can judge an action at any time, even beforehand, and that must be part of morality, which can't just observe the unfolding consequences.
Morality is not a sort of calculation, it is what sets the limits to when calculation is appropriate [Scruton]
     Full Idea: It is nearer the truth to see morality as setting the limits to practical reasoning, rather than being a species of it. Moral principles tell us precisely that we must go no further along the path of calculation.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.52)
     A reaction: Well said. If you are assessing whether an act of vicious brutality is required, you have probably already gone morally astray. It is not hard, though, to think of counterexamples, especially in wartime.
Utilitarianism merely guides us (by means of sympathy) when the moral law is silent [Scruton]
     Full Idea: Utilitarian thinking does not replace or compete with the moral law, but guides us when the moral law is silent and only sympathy speaks.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.63)
     A reaction: If the moral law is silent, it is not quite clear why we should follow sympathy rather than contempt. There is the well-known danger here of the moral law turning out to lack content.
25. Social Practice / F. Life Issues / 6. Animal Rights
We favour our own animals over foreign ones because we see them as fellow citizens [Scruton]
     Full Idea: We don't give help to British animals (through the RSPCA) rather than foreign animals because of their nearness or needs, but because of our sense of them as fellow citizens.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.104)
     A reaction: A bit strong. It may, in fact, be because we look after them the way we look after the rest of our property. Even Kantians can be sentimental sometimes.
Brutal animal sports are banned because they harm the personality of the watcher [Scruton]
     Full Idea: Dog-fights and bear-baiting are naturally forbidden by law, because they threaten the personality of those who attend them.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.107)
     A reaction: Hm. If this is so, it is mainly because it takes place in a closed pen, where we can get a close look at the brutality and blood. It could be said to be more honest than hunting with gun or hounds. 'Go on eyes, look your worst'.
Letting your dog kill wild rats, and keeping rats for your dog to kill, are very different [Scruton]
     Full Idea: There is a difference between the person who allows his terrier to kill wild rats, and the person who keeps tame rats for his terrier to kill.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.87)
     A reaction: There are areas in the middle, where I encourage pheasants to breed 'wild' on my land. The purchase of a Rottweiller also tests the moral boundaries here.
Many of the stranger forms of life (e.g. worms) interest us only as a species, not as individuals [Scruton]
     Full Idea: Most of the stranger forms of life (worms, fleas, locusts etc.) are not really suitors for our moral concern, and interest us primarily as species, and only rarely as individuals.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.13)
     A reaction: Interesting, but that seems to reflect on us, rather than cutting nature at the joints. As soon as you look closely, you recognise an individual rather than a member of a species.
Animals command our sympathy and moral concern initially because of their intentionality [Scruton]
     Full Idea: It seems to me that the concept of intentionality introduces the first genuine claim of animals upon our sympathies and our moral concern.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.16)
     A reaction: Good. If one's approach to morality is Humean (via sympathy) this seems right. Utilitarianism bases animal rights on qualia (pleasures and pains).
An animal has individuality if it is nameable, and advanced animals can respond to their name [Scruton]
     Full Idea: An animal has acquired individuality if the gift of a proper name seems appropriate, the high point being reached with animals such as dogs which actually respond to their own name.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.39)
     A reaction: Interesting, even though it is rather chauvinistic. I might name the fleas in my circus, but regard a whole section of the human race as indistinguishable and not worth naming.
I may avoid stepping on a spider or flower, but fellow-feeling makes me protect a rabbit [Scruton]
     Full Idea: I instinctively recoil from stepping on a spider or a forget-me-knot in my path, but neither of these responses expresses the fellow-feeling that forbids me to step on a rabbit or a mouse.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.41)
     A reaction: It is fellow-feeling that makes us prefer mammals to reptiles. It seems wrong to build a moral system purely on empathy, because psychopaths don't even empathise with nice human beings. Externalism in morality.
Lucky animals are eaten by large predators, the less lucky starve, and worst is death by small predators [Scruton]
     Full Idea: Lucky animals die in the jaws of a large predator; predators themselves are less lucky, when they die of lingering starvation; least fortunate are those killed by smaller creatures, such as maggots and bacteria.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.43)
     A reaction: A nice insight, even if it does slide into claiming that we are simply large predators, and that therefore fox-hunting is a virtue…
We can easily remove the risk of suffering from an animal's life, but we shouldn't do it [Scruton]
     Full Idea: It is easy to remove the risk of suffering from an animal's life, but the result is not a life which an animal should lead.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.44)
     A reaction: I'm not clear where the "should" derives from here. You can't save them all, and large interventions would destroy the ecosystem. But should we never, say, put a victim out of its misery?
Sheep and cattle live comfortable lives, and die an enviably easy death [Scruton]
     Full Idea: Sheep and beef cattle live a quiet and comfortable life among their companions, and are despatched in ways which human beings, if they are rational, must surely envy.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.81)
     A reaction: No rational person could envy a premature death, and we don't wait for cattle to be old before eating them. A quick death is little consolation for being murdered, and many people would prefer a slower death (without agony, of course).
Concern for one animal may harm the species, if the individual is part of a bigger problem [Scruton]
     Full Idea: Too much concern for individual animals may in fact harm the species, by promoting diseased or degenerate members, or preventing population control.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.87)
     A reaction: Okay till we reach human beings, where this principle won't go away, even if further principles about personhood, rationality and deep sympathy enter the picture. We can't be utilitarian about animals, and something else about humans.
Introducing a natural means of controlling animal population may not be very compassionate [Scruton]
     Full Idea: It is hard to believe that those who would introduce wolves as a means of controlling the deer population have much sympathy for deer.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.91)
     A reaction: Good point. If we assume that culling is required at all, then the decisive human actions which shock us on television may be nicer than the natural deaths that occur during the night.
Animals are outside the community of rights, but we still have duties towards them [Scruton]
     Full Idea: Animals exist outside the web of reciprocal rights and obligations, created by dialogue, but because they have no rights it does not mean that we have no duties towards them.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.97)
     A reaction: The modern Kantian view of animals, though Kant struggled to show why we might have any duties to animals. Is mere compassion enough to produce a duty, or is it a luxurious indulgence of our nature?
Many breeds of animals have needs which our own ancestors planted in them [Scruton]
     Full Idea: Many breeds of animals have needs which our own ancestors planted in them.
     From: Roger Scruton (Animal Rights and Wrongs [1996], p.75)
     A reaction: He is talking about race horses and St Bernards. This doesn't avoid the moral dilemma, because we could race horses die out if we thought we had created a bad life for them.