@Holiday20310401,
I think notions of 'an immaterial thing' or a 'spiritual substance' are incorrect and have caused untold difficulties in Western philosophy. I deny that there is any such thing as an immaterial substance or non-material existence. Yet I am not a materialist. Here is an explanation based on what little understanding I have of the Neo-platonist attitude to the question of the nature of transcendent reality.
I think it can be easily shown that reality itself consists of much more than simply 'what exists'. Very simplistically, if you regard 'reality' as being the sum total of 'things that exist' (and many do) then you need to find the fundamental elements of existence. These, you might think, would be atoms. However 'atomism', in this naive sense, is no longer tenable, as the atom has been split and can no longer be regarded as the 'fundamental unit of material reality' as it was in the heyday of scientific materialism. (Maybe this is why they are calling the Higgs Boson The God Particle.)
So what fundamentally exists? Actually the difficulty you will have in answering this question is that nothing exists absolutely or in its own right. Sure everything is composed of elements, and elements are composed of atoms: but atoms are composed of...? As yet, the 'fundamental constituent of matter' is still an open question.
To change tack a little, what of things that
don't exist but are real? Perhaps it can be demonstrated that what is real, and what exists, might be different.
Reality contains everything that exists, but existence is only a subset of what is real. Nothing unreal exists, but some things which are real do not exist. Existence is of objects, while reality also covers ideas beyond objects. A number is only real, while a baseball exists. The gross national product is only real, while Antarctica exists. The probability of the sun not rising tomorrow is real, while the sun itself exists. A number (in the sense beyond numeral) cannot be a sense object and so does not exist... there's no place to go to look for a number. Anything which has no spatio-temporal meaning (and thus no "there" to be at to observe) cannot be said to exist. Such things can be real if properly derived out of experience, but they do not exist.(1)
When you think about it, the same logic applies to many, perhaps all, elements of our experience. All of our experience, the nature of reality itself, seems to consist of the experience of 'objects' and sensations related to those objects, which in turn seems to consist largely of matter, 'dumb stuff', being randomly pushed around according to physical laws.
Yet the relationships of all of these objects to each other, and to us, and the manner in which they exist, is not actually revealed by their mere existence. (This follows from the fact that they cannot be completely analysed.) To begin with, they exist 'for us', or in relation to our particular sensory and intellectual capabilities (cf Kant). However Neoplatonism would add, there is also a sense in which the existence of any particular object is intelligible only insofar as it is lawful, and the laws themselves are not disclosed by any of the objects of perception. They obey these laws (which, perhaps, are still acknowledged today in the idea of 'scientific law', which arguably did evolve from this paticular aspect of Western philosophy) and are 'real' only because they are 'instances of universals'.
In other words, because matter is mere 'dumb stuff' it would not exist as objects - nor would there be any intelligence to perceive it - were it not for the lawful forms which precede all existence and cause it to be arrayed in the manner in which we see it. These 'forms' do not in themselves exist; they are beyond existence. 'Things' do the hard work of existing, but only in accordance with the forms.
We could go much further with this type of analysis but the point of it is that it can be used to illustrate the nature of 'the transcendent intelligence' (a.k.a 'One Mind', 'The One', 'Spirit') as a completely different kind of thing to the idea of 'an immaterial substance'. In fact it suggests that this dualistic opposition between 'matter' and 'spirit' is a
false dichotomy. (This may well have had something to do with the triumph of the Nominalists over the Realists?)
For in this picture, which is the nature of reality according to the Platonist tradition, long since abandoned, 'that which creates the forms' can never be regarded as a thing or object of perception. All we see are the effects of it, the consequences of its creative ideation. 'Spirit' or 'Mind' or whatever you would like to call it, does not
exist, but is beyond existence, and can, therefore, only be intuited by the 'purified intellect' of the Philosopher, on account of the relationship of the individual intellect to the One. So contemplation of these realities is the role of 'the philosopher' insofar as his/her intellect is able to 'ascend' to the realm of Form.
OK that is pretty far out, I realise, and there may be a lot wrong with it, but *I think* it points to a way of understanding the nature of the idea of 'spirit' in a competely different way to that depicted in Cartesian dualism, which I think came down from a particular aspect of Aristotlean thought where he differed greatly from Plato.
Criticisms welcomed....
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Philosophy Forums: Reality, Existence, and the Atom