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8375
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'Necessary' is a predicate of a propositional function, saying it is true for all values of its argument [Russell]
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Full Idea:
'Necessary' is a predicate of a propositional function, meaning that it is true for all possible values of its argument or arguments. Thus 'If x is a man, x is mortal' is necessary, because it is true for any possible value of x.
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From:
Bertrand Russell (On the Notion of Cause [1912], p.175)
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A reaction:
This is presumably the intermediate definition of necessity, prior to modern talk of possible worlds. Since it is a predicate about functions, it is presumably a metalinguistic concept, like the semantic concept of truth.
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22449
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When we say 'is red' we don't mean 'seems red to most people' [Foot]
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Full Idea:
One might think that 'is red' means the same as 'seems red to most people', forgetting that when asked if an object is red we look at it to see if it is red, and not in order to estimate the reaction that others will have to it.
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From:
Philippa Foot (Moral Relativism [1979], p.23)
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A reaction:
True, but we are conscious of our own reliability as observers (e.g. if colourblind, or with poor hearing or eyesight). I don't take my glasses off, have a look, and pronounce that the object is blurred. Ordinary language philosophy in action.
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22451
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All people need affection, cooperation, community and help in trouble [Foot]
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Full Idea:
There is a great deal that all men have in common; all need affection, the cooperation of others, a place in a community, and help in trouble.
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From:
Philippa Foot (Moral Relativism [1979], p.33)
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A reaction:
There seem to be some people who don't need affection or a place in a community, though it is hard to imagine them being happy. These kind of facts are the basis for any sensible cognitivist view of ethics. They are basic to Foot's view.
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22452
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Do we have a concept of value, other than wanting something, or making an effort to get it? [Foot]
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Full Idea:
Do we know what we mean by saying that anything has value, or even that we value it, as opposed to wanting it or being prepared to go to trouble to get it?
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From:
Philippa Foot (Moral Relativism [1979], p.35)
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A reaction:
Well, I value Rembrandt paintings, but have no aspiration to own one (and would refuse it if offered, because I couldn't look after it properly). And 'we' don't want to move the Taj Mahal to London. She has not expressed this good point very well.
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4396
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The law of causality is a source of confusion, and should be dropped from philosophy [Russell]
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Full Idea:
The law of causality, I believe, like much that passes muster among philosophers, is a relic of a bygone age, surviving, like the monarchy, only because it is erroneously supposed to do no harm.
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From:
Bertrand Russell (On the Notion of Cause [1912], p.173)
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A reaction:
A bold proposal which should be taken seriously. However, if we drop it from scientific explanation, we may well find ourselves permanently stuck with it in 'folk' explanation. What is the alternative?
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8379
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In causal laws, 'events' must recur, so they have to be universals, not particulars [Russell]
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Full Idea:
An 'event' (in a statement of the 'law of causation') is intended to be something that is likely to recur, since otherwise the law becomes trivial. It follows that an 'event' is not some particular, but a universal of which there may be many instances.
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From:
Bertrand Russell (On the Notion of Cause [1912], p.179)
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A reaction:
I am very struck by this. It may be a key insight into understanding what a law of nature actually is. It doesn't follow that we must be realists about universals, but the process of abstraction from particulars is at the heart of generalisation.
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