Get this from a library! El positivismo lógico. [A J Ayer; L Aldama; U Frisch; C N Molina; et al]. Alfred Jules Ayer El positivismo Lógico. 2 likes. Book. Buy Positivismo lógico, el by Alfred Julius Ayer, L. Aldama (ISBN: ) from Amazon’s Book Store. Everyday low prices and free delivery on eligible.

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Willard Van Orman Quine 6.

The problem of induction is, roughly speaking, the problem of finding a way to prove that certain empirical generalizations which are derived from past experience will hold good also in the future.

We infer the existence of events which we are not actually observing, with the help of general principle.

The principles of logic and mathematics are true simply because we never allow them to be anything else. By mere deduction from what is immediately given we cannot advance a single step beyond.

Frases de Alfred Jules Ayer

But these principles must be obtained inductively. The Foundations of Empirical Knowledge Henri Matisse 3 – Then we may say that it is the mark of a genuine factual proposition, not that it should be equivalent to an experiential proposition, or any finite number powitivismo experiential propositions, but simply that some experiential propositions can be deduced from it in conjunction with certain other premises without being deducible from those other premises alone.


Jeremy George, in [http: A Life by Ben Rogers, p. John Stuart Mill Marshall McLuhan 9 – Maksim Litvinov 1 – posiitvismo A Lifep. Frases de Alfred Jules Ayer. For if there are any questions which science leaves it to philosophy to answer, a straightforward process of elimination must lead to their discovery. The traditional disputes of philosophers are, for the most part, as unwarranted as they are unfruitful.

I am logick it here in such a way that to say of an object that it is perceived does not entail saying that it exists in any sense at all. Autores parecidos Ludwig Wittgenstein To make our position clearer, we may formulate it ayef another way. I’m afraid I’m going to have to revise all my various books and opinions.

The surest way to end them is to establish beyond question what should be the purpose and method of a philosophical enquiry. And this is a perfectly correct and familiar usage of the word. And this is by no means so difficult a task as the history of philosophy would lead one to suppose. There are only two ways of positiviemo this problem on the assumption that it is a genuine problem, and it is easy to see that neither of them can lead to its solution.

The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifiability. Let us call a proposition which records an actual or possible observation an experiential proposition.

As Hume conclusively showed, no one event intrinsically points to any other.

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And, consequently, any attempt to base a deductive system on propositions which describe what is immediately given is bound to be a failure. And the reason for this is that we cannot abandon them without contradicting ourselves, without sinning against the rules which govern the use of language, and so making our utterances self-stultifying. We say that a sentence is factually significant to any given person, if, and only if, he knows how to verify the proposition which it purports to express — that is, if he knows what observations positivism lead him, under certain conditions, to accept the proposition as being true, or reject it as being false.

Frases de Alfred Jules Ayer (19 citações) | Citações e frases famosas

I am using the word “perceive”. It is as if I had written “Stealing money!! In other words, the truths of logic and mathematics are analytic propositions or tautologies. If there is thought to be llgico difficulty here, it is perhaps because there is also a correct and familiar usage of the word “perceive”, in which to say of an object that it is perceived does carry the implication that it exists.