7 ideas
19043 | Bivalence applies not just to sentences, but that general terms are true or false of each object [Quine] |
Full Idea: It is in the spirit of bivalence not just to treat each closed sentence as true or false; as Frege stressed, each general term must be definitely true or false of each object, specificiable or not. | |
From: Willard Quine (What Price Bivalence? [1981], p.36) | |
A reaction: But note that this is only the 'spirit' of the thing. If you had (as I do) doubts about whether predicates actually refer to genuine 'properties', you may want to stick to the whole sentence view, and not be so fine-grained. |
19042 | Terms learned by ostension tend to be vague, because that must be quick and unrefined [Quine] |
Full Idea: A term is apt to be vague if it is to be learned by ostension, since its applicability must admit of being judged on the spot and so cannot hinge of fine distinctions laboriously drawn. | |
From: Willard Quine (What Price Bivalence? [1981], p.32) | |
A reaction: [Quine cites C. Wright for this] Presumably precision can steadily increased by repeated ostension. After the first 'dog' it's pretty vague; after hundreds of them we are pretty clear about it. Long observation of borderline 'clouds' could do the same. |
17619 | We renounce all abstract entities [Goodman/Quine] |
Full Idea: We do not believe in abstract entities..... We renounce them altogether. | |
From: Goodman,N/Quine,W (Steps Towards a Constructive Nominalism [1947], p.105), quoted by Penelope Maddy - Defending the Axioms | |
A reaction: Goodman always kept the faith here, but Quine decided to embrace sets, as a minimal commitment to abstracta needed for mathematics, which was needed for science. My sympathies are with Goodman. This is the modern form of 'nominalism'. |
23647 | Objects have an essential constitution, producing its qualities, which we are too ignorant to define [Reid] |
Full Idea: Individuals and objects have a real essence, or constitution of nature, from which all their qualities flow: but this essence our faculties do not comprehend. They are therefore incapable of definition. | |
From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1) | |
A reaction: Aha - he's one of us! I prefer the phrase 'essential nature' of an object, which is understood, I think, by everyone. I especially like the last bit, directed at those who mistakenly think that Aristotle identified the essence with the definition. |
11958 | Impossibilites are easily conceived in mathematics and geometry [Reid, by Molnar] |
Full Idea: Reid pointed out how easily conceivable mathematical and geometric impossibilities are. | |
From: report of Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], IV.III) by George Molnar - Powers 11.3 | |
A reaction: The defence would be that you have to really really conceive them, and the only way the impossible can be conceived is by blurring it at the crucial point, or by claiming to conceive more than you actually can |
23646 | Reference is by name, or a term-plus-circumstance, or ostensively, or by description [Reid] |
Full Idea: An individual is expressed by a proper name, or by a general word joined to distinguishing circumstances; if unknown, it may be pointed out to the senses; when beyond the reach of the senses it may be picked out by an imperfect but true description. | |
From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1) | |
A reaction: [compressed] If Putnam, Kripke and Donnellan had read this paragraph they could have save themselves a lot of work! I take reference to be the activity of speakers and writers, and these are the main tools of the trade. |
23645 | A word's meaning is the thing conceived, as fixed by linguistic experts [Reid] |
Full Idea: The meaning of a word (such as 'felony') is the thing conceived; and that meaning is the conception affixed to it by those who best understand the language. | |
From: Thomas Reid (Essays on Intellectual Powers 4: Conception [1785], 1) | |
A reaction: He means legal experts. This is precisely that same as Putnam's account of the meaning of 'elm tree'. His discussion here of reference is the earliest I have encountered, and it is good common sense (for which Reid is famous). |