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Single Idea 23495
[filed under theme 10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
]
Full Idea
The fact that the propositions of logic are tautologies shows the formal - logical - properties of language and the world.
Gist of Idea
The tautologies of logic show the logic of language and the world
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 6.12)
Book Ref
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.60
A Reaction
This seems to me an extraordinarily hubristic remark (philosophically speaking), especially coming from a work which famously throws away its own ladder. He is very much pursuing Kant's project.
Related Ideas
Idea 23461
Kant thought worldly necessities are revealed by what maths needs to make sense [Kant, by Morris,M]
Idea 10804
Thoughts have a natural order, to which human thinking is drawn [Frege, by Yablo]
The
22 ideas
with the same theme
[knowing what must be, just through thought]:
2301
|
We know by thought that what is done cannot be undone
[Descartes]
|
12553
|
Some of our ideas contain relations which we cannot conceive to be absent
[Locke]
|
2112
|
Truths of reason are known by analysis, and are necessary; facts are contingent, and their opposites possible
[Leibniz]
|
17079
|
Proofs of necessity come from the understanding, where they have their source
[Leibniz]
|
19432
|
Intelligible truth is independent of any external things or experiences
[Leibniz]
|
23461
|
Kant thought worldly necessities are revealed by what maths needs to make sense
[Kant, by Morris,M]
|
14710
|
Necessity is always knowable a priori, and what is known a priori is always necessary
[Kant, by Schroeter]
|
16256
|
For Kant metaphysics must be necessary, so a priori, so can't be justified by experience
[Kant, by Maudlin]
|
5524
|
Maths must be a priori because it is necessary, and that cannot be derived from experience
[Kant]
|
23495
|
The tautologies of logic show the logic of language and the world
[Wittgenstein]
|
9169
|
A statement can be metaphysically necessary and epistemologically contingent
[Putnam]
|
15101
|
Once you give up necessity as a priori, causal necessity becomes the main type of necessity
[Shoemaker]
|
4728
|
Kripke separates necessary and a priori, proposing necessary a posteriori and contingent a priori examples
[Kripke, by O'Grady]
|
16990
|
A priori = Necessary because we imagine all worlds, and we know without looking at actuality?
[Kripke]
|
15228
|
Necessity and contingency are separate from the a priori and the a posteriori
[Harré/Madden]
|
2526
|
Philosophers regularly confuse failures of imagination with insights into necessity
[Dennett]
|
12428
|
Many necessities are inexpressible, and unknowable a priori
[Kitcher]
|
20476
|
If the necessary is a priori, so is the contingent, because the same evidence is involved
[Casullo]
|
13956
|
Kripke is often taken to be challenging a priori insights into necessity
[Chalmers]
|
9598
|
Modal thinking isn't a special intuition; it is part of ordinary counterfactual thinking
[Williamson]
|
21621
|
We can't infer metaphysical necessities to be a priori knowable - or indeed knowable in any way
[Williamson]
|
4719
|
Maybe developments in logic and geometry have shown that the a priori may be relative
[O'Grady]
|