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Full Idea
There are plenty of necessary truths that we are unable to express, let alone know a priori.
Gist of Idea
Many necessities are inexpressible, and unknowable a priori
Source
Philip Kitcher (A Priori Knowledge Revisited [2000], §II)
Book Ref
'New Essays on the A Priori', ed/tr. Boghossian,P /Peacocke,C [OUP 2000], p.69
A Reaction
This certainly seems to put paid to any simplistic idea that the a priori and the necessary are totally coextensive. We might, I suppose, claim that all necessities are a priori for the Archangel Gabriel (or even a very bright cherub). Cf. Idea 12429.
Related Idea
Idea 12429 Knowing our own existence is a priori, but not necessary [Kitcher]
12428 | Many necessities are inexpressible, and unknowable a priori [Kitcher] |
12429 | Knowing our own existence is a priori, but not necessary [Kitcher] |
12430 | Classical logic is our preconditions for assessing empirical evidence [Kitcher] |
12431 | I believe classical logic because I was taught it and use it, but it could be undermined [Kitcher] |