We argue that prevailing definitions of Berkeley’s idealism fail to rule out a nearby Spinozist rival view that we call ‘mind-body identity panpsychism.’ Since Berkeley certainly does not agree with Spinoza on this issue, we call for more care in defining Berkeley’s view. After we propose our own definition of Berkeley’s idealism, we survey two Berkeleyan strategies to block the mind-body identity panpsychist and establish his idealism. We argue that Berkeley should follow Leibniz and further develop his account of the (...) mind’s unity. Unity—not activity—is the best way for Berkeley to establish his view at the expense of his panpsychist competitors. (shrink)

Berkeley's idealism consists of the following claims. Objects such as chairs, apples, mountains, and our bodies are combinations of sensible qualities. Sensible qualities and combinations of such are ideas or sensations. In the philosophical sense of ‘substance’ there is no such entity as a substance. There are minds which perceive and will: When a mind perceives it has sensations or ideas; and when a mind wills it produces or causes sensations or ideas. These claims are grounded in the ontological and (...) epistemological framework of assumptions, distinctions and arguments informing Berkeley's doctrine thatesse est percipi aut percipere.The purpose of this paper is to explore and expose the main features of that framework.What is the ontological force and import on Berkeley's claim thatesse est percipi?One influential recent suggestion1 is this: Berkeley holds that (1) material substances do not exist, (2) the analysis of sensible things yields nothing but sensible qualities, (3) minds are mental substances and (4) no sensible quality or collection of sensible qualities can exist without inhering in some substance. (shrink)

Many philosophers have maintained that secondary qualities are private mental entities. In this paper I use the discussions of H. A. Prichard, Berkeley and G. E. Moore on the status of secondary qualities to bring out the assumptions that underlie this view. One of these is that secondary qualities are particular. I show that Prichard holds these assumptions and then I attempt to diagnose why he holds them. In the course of this diagnosis I explore several senses of 'dependent' which (...) play a role in this view. Finally, I show that a causal dependence of secondary qualities upon the perceiver will not lead to the conclusion that secondary qualities are private unless the philosophical thesis that they are particular is already assumed. (shrink)

Berkeley’s Principles is a curious work. The nominal topic is epistemic. The actual topic is ontological. And it is not uncommon to suggest that ‘Berkeley’s system presents us with unique puzzles, particularly at its foundation.’.

When Keats identified truth and beauty, he surely intended mere extensionality. I myself have never had much trouble with either half of the equivalence. Others have considerable difficulty. A case in point is the Watson-Allaire-Cummins interpretation of Berkeley's idealism, which I shall refer to henceforth as the inherence account. That account is put forward to answer an extremely perplexing question in the history of philosophy: Why did Berkeley embrace idealism, i.e., why did he hold that esse est percipi, that to (...) be is to be perceived, indeed that what is perceived must be perceived in order to exist? In essence, the IA answers these questions very simply and elegantly: perceived qualities are, for Berkeley, qualities of the mind in the same sense that, in the tradition of substance metaphysics, blue is a quality of a blue flower; just as the blue of the flower is inseparable from it, so the perceived blue is inseparable from the mind that perceives it. (shrink)