Are there any classic proofs of the necessity of a mind-independent "reality," along the lines of Anselm's proof of God?

  • I'd suggest making the second part into a question of it's own - I don't know the answer, but it seems more suited to the site that way.
    – DTR
    Sep 5 '15 at 23:49
  • Thanks, I deleted my reference query about Kant's noumena. What remains may be too broad, but I'll try fishing for a bit. I guess I was picturing answers post-Kantian "turn" to a subject-centered ontology. But by that time, I suppose we don't have curt "proofs" in the Anselm style, at least not on the Continental side. Sep 6 '15 at 15:47
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    Does Cartesian Circle count? Clear and distinct perceptions indicate existence of reality because God exists and is not a deceiver. God exists and is not a deceiver because Descartes has a clear and distinct perceptions of him. en.wikipedia.org/wiki/Cartesian_circle Ontological argument is itself fallacious, but in a more subtle way philosophy.stackexchange.com/questions/24484/…
    – Conifold
    Sep 8 '15 at 0:10
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    A Treatise Concerning the Principles of Human Knowledge by Berkeley does come up with a long string of proofs which should adequately answer your query. Apr 18 '16 at 12:40
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    A fortiori every proof for the existence of god is a proof for mind independent reality, so long as you can exclude the possibility that you are god.
    – KKell
    Apr 19 '16 at 2:43

There are no popular theories pertaining to the "necessity" of an external world. Bishop Berkeley tries to prove the necessity of an entirely mind-dependant world, but direct realists have only refuted their opposition, and not made any solid attempt to defend reality. The only way to have necessary existence of reality is to invoke God as Descartes does when asserting his own existence, and invoking the non-natural opens a theory to more problems than it solves.

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