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18904
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'Predicable' terms come in charged pairs, with one the negation of the other [Sommers, by Engelbretsen]
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Full Idea:
Sommers took the 'predicable' terms of any language to come in logically charged pairs. Examples might be red/nonred, massive/massless, tied/untied, in the house/not in the house. The idea that terms can be negated was essential for such pairing.
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From:
report of Fred Sommers (Intellectual Autobiography [2005]) by George Engelbretsen - Trees, Terms and Truth 2
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A reaction:
If, as Rumfitt says, we learn affirmation and negation as a single linguistic operation, this would fit well with it, though Rumfitt doubtless (as a fan of classical logic) prefers to negation sentences.
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18895
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Logic which maps ordinary reasoning must be transparent, and free of variables [Sommers]
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Full Idea:
What would a 'laws of thought' logic that cast light on natural language deductive thinking be like? Such a logic must be variable-free, conforming to normal syntax, and its modes of reasoning must be transparent, to make them virtually instantaneous.
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From:
Fred Sommers (Intellectual Autobiography [2005], 'How We')
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A reaction:
This is the main motivation for Fred Sommers's creation of modern term logic. Even if you are up to your neck in modern symbolic logic (which I'm not), you have to find this idea appealing. You can't leave it to the psychologists.
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18893
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Translating into quantificational idiom offers no clues as to how ordinary thinkers reason [Sommers]
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Full Idea:
Modern predicate logic's methods of justification, which involve translation into an artificial quantificational idiom, offer no clues to how the average person, knowing no logic and adhering to the vernacular, is so logically adept.
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From:
Fred Sommers (Intellectual Autobiography [2005], Intro)
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A reaction:
Of course, people are very logically adept when the argument is simple (because, I guess, they can test it against the world), but not at all good when the reasoning becomes more complex. We do, though, reason in ordinary natural language.
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18903
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Sommers promotes the old idea that negation basically refers to terms [Sommers, by Engelbretsen]
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Full Idea:
If there is one idea that is the keystone of the edifice that constitutes Sommers's united philosophy it is that terms are the linguistic entities subject to negation in the most basic sense. It is a very old idea, tending to be rejected in modern times.
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From:
report of Fred Sommers (Intellectual Autobiography [2005]) by George Engelbretsen - Trees, Terms and Truth 2
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A reaction:
Negation in modern logic is an operator applied to sentences, typically writing '¬Fa', which denies that F is predicated of a, with Fa being an atomic sentence. Do we say 'not(Stan is happy)', or 'not-Stan is happy', or 'Stan is not-happy'? Third one?
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18894
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Predicates form a hierarchy, from the most general, down to names at the bottom [Sommers]
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Full Idea:
We organise our concepts of predicability on a hierarchical tree. At the top are terms like 'interesting', 'exists', 'talked about', which are predicable of anything. At the bottom are names, and in between are predicables of some things and not others.
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From:
Fred Sommers (Intellectual Autobiography [2005], 'Category')
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A reaction:
The heirarchy seem be arranged simply by the scope of the predicate. 'Tallest' is predicable of anything in principle, but only of a few things in practice. Is 'John Doe' a name? What is 'cosmic' predicable of? Challenging!
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7590
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Consequentialism emphasises value rather than obligation in morality [Scruton]
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Full Idea:
According to consequentialism, the fundamental concept of morality is not obligation (deontological ethics) but value (axiological ethics).
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From:
Roger Scruton (A Dictionary of Political Thought [1982], 'consequentialism')
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A reaction:
These two views could come dramatically apart, in wartime, or in big ecological crises, or in a family breakup, or in religious disputes. Having identified the pair so clearly, why can we not aim for a civilised (virtuous) balance between the two?
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3272
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Moral luck can arise in character, preconditions, actual circumstances, and outcome [Nagel]
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Full Idea:
Moral luck involves one's character, the antecedent circumstances of the act, the actual circumstances of the act, and the outcome of the act.
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From:
Thomas Nagel (Moral Luck [1976], p.28)
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A reaction:
Meaning, I take it, that there can be luck in any one of those four. A neat slicing up that doesn't quite fit the real world, where things flow. Helpful, though.
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7589
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Altruism is either emotional (where your interests are mine) or moral (where they are reasons for me) [Scruton]
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Full Idea:
Two distinct motives go by the name of altruism: the emotions of liking, love and friendship, making another's interest automatically mine; and the moral motive of respect or considerateness, where another's interests become reasons for me, but not mine.
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From:
Roger Scruton (A Dictionary of Political Thought [1982], 'altruism')
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A reaction:
The second one has a strongly Kantian flavour, with its notion of impersonal duty. Virtue theorists will aspire to achieve the first state rather than the second, because good actions are then actively desired, and give pleasure to the doer.
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7593
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Liberals focus on universal human freedom, natural rights, and tolerance [Scruton, by PG]
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Full Idea:
Liberalism believes (roughly) in the supremacy of the individual, who has freedom and natural rights; it focuses on human, not divine affairs; it claims rights and duties are universal; and it advocates tolerance in religion and morality.
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From:
report of Roger Scruton (A Dictionary of Political Thought [1982], 'liberalism') by PG - Db (ideas)
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A reaction:
I find it hard to disagree with these principles, but the upshot in practice is often an excessive commitment to freedom and tolerance, because people fail to realise the subtle long-term erosions of society that can result.
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7587
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The issue of abortion seems insoluble, because there is nothing with which to compare it [Scruton]
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Full Idea:
The issue of abortion is intractable, partly because of the absence of any other case to which it can be assimilated.
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From:
Roger Scruton (A Dictionary of Political Thought [1982], 'abortion')
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A reaction:
This is the legalistic approach to the problem, which always looks for precedents and comparisons. All problems must hav solutions, though (mustn't they?). The problem, though, is not the value of the foetus, but the unique form of 'ownership'.
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