I am against the empty assertions of metaphysical propositions for which no objective epistemological method is presented.
From your comments I presume you would accept that âGod existsâ is an example you have in mind. Here I think we do have good epistemological grounds for postulating God in reality (in metaphysics). For example, if I am a rationalist (and I note at this point that ALL rationalists in the history of philosophy have been Theists, from Plato to Leibniz to Spinoza to et cetera), then I might think that something like the Principle of Sufficient Reason (as a principle of modal logic) is self-evidently true, and also evidently obviates the need to postulate a necessary incontingent being of tremendous power which is the cause of everything which exists contingently, and which being is also personal. To see such an argument worked out, check out this paper written by a brilliant Catholic philosopher named Alexander Pruss:
bearspace.baylor.edu/Alexander_Pruss/www/papers/LCA.html
Now, what an empiricist will say to that is that the PSR cannot be known by rational intuition (since beliefs which come by way of rational intuition arenât âjustifiedâ). I disagree, but I think I can do better than just disagreeing. I can say that even if some intuitions have been shown to be misleading in the past, this isnât a good reason for doing away with all intuitions. After all, Modus Tollens and Modus Ponens are just based on intuition. So one is justified in accepting oneâs rational intuition unless and until there is some defeater for it. There is no defeater for the PSR (unless you accept the argument that it leads to modal collapse, or something like that), and therefore one is justified in believing the PSR is true, and therefore one is justified in postulating God in metaphysics. Thatâs a very brief treatment, and Iâd like to say more, but Iâve already written about this on my blog at
www.thirdmillennialtemplar.wordpress.com which youâre free to check out if youâre interested. I will warn you though, itâs pretty philosophical.
(And ârevelationâ or âthe church teachesâŚâ or âthe bible saysâ, etc⌠are not epistemological methods.)
Actually, they are (that epistemology is called Fideism). They may not be very good ones on their own, but if one is willing to fit those ingredients into a wider account of epistemology then I think that appealing to revelation, for example, can be a justified epistemic move.
Let me share with you my own epistemology, to serve as an example. First, I am a rationalist since I believe that the things we can be most certain about are mathematical and logical truths, and in short the truths of reason. I think that one is justified believing in any proposition which is necessarily true (such that in no logically possible world is it false), and here I include statements like â2+2=4â or âno man is a married bachelorâ. I then say that one is justified in accepting beliefs which are delivered by rational intuition (such as the belief that if PâQ and P, therefore Q). I also believe one is justified in accepting self-evident truths which arenât given by rational intuition and arenât necessarily true in the modal logical sense. This would include things like âI am appeared to greenlyâ or âI am thinking about somethingâ or âI am hungryâ. Nobody can be wrong about their own intentional states. I think granting only as much as Iâve already granted, I can prove God, and I believe that anything which follows from what has been granted already can be a justified belief by being an extension of justified beliefs.
None of this will get one to the mundane everyday humdrum beliefs, though, like believing there is milk in the fridge or believing in the reality of the past or the reality of other minds. For these, I adopt something like a reformed epistemology, and I argue that there are some beliefs which are naturally formed in man, in response to his environment, and which we are justified in maintaining and believing unless and until we have some defeater for those beliefs (which do not themselves admit of a defeater; a defeater without a defeater-defeater). On this account too I believe that the inference to God can be justified given religious experience (though obviously religious experience is usually private property, not public property, but one can make an appeal as well to a sort of communal verification, and since belief in God or something very much like God is adopted by such a wide majority of the worldâs population, both now and in the past, one can argue that unless thereâs a defeater for that piece of evidence one can take it as weighing in favor of Theism).
Thatâs my epistemology, and itâs consistent with a number of different metaphysical systems, including (I think) the one I adopt. Itâs probably wrong to think of metaphysical models as package deals though, since there is so much to debate in metaphysics, I think its best to say that I think my beliefs about metaphysics cohere with my account of epistemology insofar as my metaphysical beliefs are justified, as far as I can tell.