Not really. I was thinking about a proposition like “Mozart’s music is beautiful”.
Well, I’m a realist concerning aesthetic truths, so I think the truth value assigned to that proposition is literally and objectively ‘true’ (of course there are truths which are subjective, such as ‘I am here’ - though I think in the case of something’s being beautiful, one can define objective beauty by something’s ability to beatify). However, you present an interesting point, that for the anti-realist, if the sentence is a proposition, and if it isn’t true or false, then they, not unlike the mathematical intuitionists, do not hold to the law of excluded middle.
Huh? A sentence is simply a proposition expressed in a linguistic form.
Here’s the beauty of having studied philosophy: you know both how to think critically and logically, and you also know a great deal about things like the philosophy of language. Let me give you an example of a sentence which is perfectly grammatical, and yet is not a proposition (its expression has no sense or tells no story about the way the world is). Consider the sentence “Your dogs are hogging redly for the cats.” That sentence is fine as far as the rules of English grammar are concerned, but it doesn’t mean anything. It isn’t a proposition. More subtle examples exist as well, such as “Timothy is a married bachelor”. That sentence is fine grammatically, but it’s clearly nonsense (it isn’t false, it’s actually meaningless because the predicate involves a contradiction). Other examples include “God can/cannot create a square circle”, because the term ‘square-circle’ is just a meaningless combination of words that doesn’t signify or mean anything. Or again, consider the sentence “this sentence is false.” Those are all sentences, but they aren’t propositions.
Also, you said that a sentence is just a proposition expressed in linguistic form, but clearly the following is a sentence: “Do your homework!” Yet, clearly that statement isn’t a proposition (it doesn’t propose anything about the way the world is or could possibly be). It’s mood is imperative rather than indicative.
I have no idea what you are talking about. I suspect that the word “realist” as you use it, is totally different from my usage of this word.
It could be that we have different concepts at play here, but I think what I mean by a realist position is really just the common sense intuitive notion. Namely, that some proposition or set of propositions (i.e., model) about the world is true if and only if it corresponds to the way the world is independent of what anyone believes or perceives. Stephen Hawking does not believe that, as he has expressed brilliantly in his discussion of the difference between six day creationism and big bang cosmology (in The Grand Design), where he explains that neither one of these are strictly true, and neither one is closer to being true, but rather truth, in the correspondence sense, is just too much to hope for, even in science.
Now, I find it embarrassing to try to defend philosophy in general, since the study of philosophy is properly construed as the discipline of thinking hard about stuff, and to present any intelligent critique of philosophy is itself going to be philosophical, in which case the claim that philosophy cannot do anything useful is self defeating insofar as it is issued with the purpose, presumably useful, of pointing out the utter uselessness of philosophy. I can think of no more stupid a position to adopt on any issue whatsoever than to adopt a wholesale rejection of the enterprise of thinking critically, consistently and carefully. It is a dangerous thing to promote an anti-philosophical attitude, because that’s just tantamount to promoting an attitude which is anti-thought (or anti-critical-thought). Philosophy just is critical thinking. Moreover, philosophy is the only domain in which we can pursue the answers to the most important practical questions, such as whether there are moral duties, what they are, whether the human mind is equipped to understand the world as it is or merely create models for the sake of negotiating our way around in it, whether God exists, whether death is the end of the road, whether mathematical truths are mind-independent or else are model dependently true, whether science is a rational enterprise, whether anything is a rational enterprise, and so on.