Science let it be known humans could have things, could do things, entirely on their own, or at least enough on their own to call into question isolated external causality of the Berkeley-ian “un-constructed” spirit type. — Mww
Of course. But I'm of the view that it was this emerging modern view of the universe that the good Bishop wished to oppose. That the reason idealism as school of thought begins to appear in this time, is because of the rejection of scholastic realism, which held that particulars did not posses their own inherent or intrinsic reality, as scholastic realism held that the being of particulars was grounded in their intelligible form. Whereas the emerging forms of nominalism held that particulars are real 'in their own right', so to speak. This has had many consequences, most of which we're not aware of, as they are formative in modern culture.
Did Berkeley in the 18th century have any empirical evidence upon which to base his foresight of the "modern subatomic physics" view of Matter? Or was his Idealism a> just intuition or b> expansion on Plato's metaphysics? — Gnomon
It's important to get what Berkeley is saying. Many people, even many philosophers, take him to be saying that solid objects are all 'in the mind', which is why Samuel Johnson believed that kicking a rock refuted his arguments. As I've been saying, that is based on a misunderstanding of Berkeley's contention, which was that there is no
material substance apart from all of the perceived attributes of objects (size, shape, weight, solidity among them.) So he's not saying the rock doesn't exist, or is a 'mere' idea, but that what we know of it, is the sensible impressions it causes in us. As per the paragraph above on
the meaning of 'substance' in Berkeley - the meaning of substance is crucial in this context. It doesn't mean 'a material with uniform properties' (a sticky substance, a waxy substance, a very hard substance.) It means something like 'a particular of of which attributes can be predicated, or in which attributes inhere'.
(The point I'm interested in, is that 'substance' was derived from the Latin translations of Aristotle's 'ousia' in his Metaphysics, and that is a form of the verb 'to be'. So it is at least arguable that what philosophers often refer to a substances, might be better rendered as 'beings' or 'subjects'. It's not entirely correct, but it conveys something important. For instance, in translations of Spinoza, we read 'God is the infinite, necessarily existing, unique substance.' What if that was given as 'subject' or 'being'? Again, not quite right, but conveying something that has been lost in translation, and which leads to the idea, mistaken in my view, that 'substance' is objectively existent as a kind of thing, no matter how ethereal. But at any rate, it is the philosophical notion of 'substance' and in particular 'corporeal substance' which is at issue.
Of course it is true that Berkeley had no conception of
modern physics, although he might well have known of ancient atomism. But it is arguable that modern physics has also undermined the conception of 'corporeal substances'. It has certainly cast doubt on the conception of the mind-independence of fundamental particles, at issue in the 'Bohr-Einstein debates'.)
Berkeley held to Platonism in some ways, with the emphasis on ideas, but contra in others, as he opposed universals. Many say that is the real shortcoming of his philosophy.
The textbook account of Kant on Berkeley is that, after the first edition of Critique of Pure Reason, Kant was angry that many critics took him to be affirming Berkeley's basic thesis. Accordingly in the B edition, he included a section on the Refutation of Idealism, directed at Descartes and Berkeley. You can find an account
here.
Like 'substance', I think 'idea' in philosophy means something other than the parade of thoughts, words and images that pass the mind's eye. Objects are recognised by us as kinds and types - this is where Kant comes in - and without that recognition, which is part of the process of apperception, then they would be nothing to us. Experience presents itself to us in the form of ideas. It is much more clearly enunciated by Schopenhauer, in the
opening paragraph of WWI, where he recognised Berkeley's 'permanent service to philosophy', although then immediately saying 'even though the rest of his teaching should not endure'. (Talk about a back-handed compliment.)