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Rejected all these notions
- Although Berkeley rejected the Lockean notions of primary and secondary qualities and matter, he retained Locke’s belief in the existence of mind, substance, and causation as an unseen force or power in objects. David Hume, in contrast, rejected all these notions.
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Feb 14, 2022 · In 1959, Richard Popkin published a paper entitled “Did Hume Ever Read Berkeley?” and suggested that the answer to this question is no. Popkin held that everything Hume seems to know about Berkeley might have been garnered from other sources.
- Overview
- Kinds of perception
- Relations of ideas and matters of fact
- Cause and effect
- Substance
Although Berkeley rejected the Lockean notions of primary and secondary qualities and matter, he retained Locke’s belief in the existence of mind, substance, and causation as an unseen force or power in objects. David Hume, in contrast, rejected all these notions.
Hume recognized two kinds of perception: “impressions” and “ideas.” Impressions are perceptions that the mind experiences with the “most force and violence,” and ideas are the “faint images” of impressions. Hume considered this distinction so obvious that he demurred from explaining it at any length; as he indicated in a summary explication in A Treatise of Human Nature (1739–40), impressions are felt, and ideas are thought. Nevertheless, he conceded that sometimes sleep, fever, or madness can produce ideas that approximate to the force of impressions, and some impressions can approach the weakness of ideas. But such occasions are rare.
The distinction between impressions and ideas is problematic in a way that Hume did not notice. The impression (experience) of anger, for example, has an unmistakable quality and intensity. But the idea of anger is not the same as a “weaker” experience of anger. Thinking of anger no more guarantees being angry than thinking of happiness guarantees being happy. So there seems to be a difference between the impression of anger and the idea of anger that Hume’s theory does not capture.
All perceptions, whether impressions or ideas, can be either simple or complex. Whereas simple perceptions are not subject to further separation or distinction, complex perceptions are. To return to an example mentioned above, the perception of an apple is complex, insofar as it consists of a combination of simple perceptions of a certain shape, colour, texture, and aroma. It is noteworthy that, according to Hume, for every simple impression there is a simple idea that corresponds to it and differs from it only in force and vivacity, and vice versa. Thus, corresponding to the impression of red is the idea of red. This correlation does not hold true in general for complex perceptions. Although there is a correspondence between the complex impression of an apple and the complex idea of an apple, there is no impression that corresponds to the idea of Pegasus or to the idea of a unicorn; these complex ideas do not have a correlate in reality. Similarly, there is no complex idea corresponding to the complex impression of, say, an extensive vista of the city of Rome.
Because the formation of every simple idea is always preceded by the experience of a corresponding simple impression, and because the experience of every simple impression is always followed by the formation of a corresponding simple idea, it follows, according to Hume, that simple impressions are the causes of their corresponding simple ideas.
There are two kinds of impressions: those of sensation and those of reflection. Regarding the former, Hume said little more than that sensation “arises in the soul originally from unknown causes.” Impressions of reflection arise from a complicated series of mental operations. First, one experiences impressions of heat or cold, thirst or hunger, pleasure or pain; second, one forms corresponding ideas of heat or cold, thirst or hunger, pleasure or pain; and third, one’s reflection on these ideas produces impressions of “desire and aversion, hope and fear.”
Because the faculty of imagination can divide and assemble disparate ideas at will, some explanation is needed for the fact that people tend to think in regular and predictable patterns. Hume said that the production of thoughts in the mind is guided by three principles: resemblance, contiguity, and cause and effect. Thus, people who think of one idea are likely to think of another idea that resembles it; their thought is likely to run from red to pink to white or from dog to wolf to coyote. Concerning contiguity, people are inclined to think of things that are next to each other in space and time. Finally and most importantly, people tend to create associations between ideas of things that are causally related. The ideas of fire and smoke, parent and child, and disease and death are connected in the mind for that reason.
According to Hume, the mind is capable of apprehending two kinds of proposition or truth: those expressing “relations of ideas” and those expressing “matters of fact.” The former can be intuited—i.e., seen directly—or deduced from other propositions. That a is identical with a, that b resembles c, and that d is larger than e are examples of propositions that are intuited. The negations of true propositions expressing relations of ideas are contradictory. Because the propositions of arithmetic and algebra are exclusively about relations of ideas, according to Hume, those disciplines are more certain than others. In the Treatise, Hume said that geometry is not quite as certain as arithmetic and algebra, because its original principles derive from sensation, and about sensation there can never be absolute certainty. He revised his views later, however, and, in An Enquiry Concerning Human Understanding (1748), he put geometry on an equal footing with the other mathematical sciences.
Unlike propositions about relations of ideas, propositions about matters of fact are known only through experience. By far the most important of such propositions are those that express or presuppose causal relations—e.g., “Fire causes heat” and “A moving billiard ball communicates its motion to any stationary ball it strikes.” But how is it possible to know through experience that one kind of object or event causes another? What kind of experience would justify such a claim?
In the Treatise, Hume observed that the idea of causation contains three components: contiguity (i.e., near proximity) of time and place, temporal priority of the cause, and a more mysterious component, which he called “necessary connection.” In other words, when one says that x is a cause of y, one means that instances of x and instances of y are always near each other in time and space, that instances of x occur before instances of y, and that there is some connection between x’s and y’s that makes it necessary that an instance of y occurs if an instance of x does.
It is easy to explain the origin in experience of the first two components of the idea of causation. In past experience, all events consisting of a moving billiard ball striking a stationary one were quickly followed by events consisting of the movement of the formerly stationary ball. In addition, the first sort of event always preceded the second and never the reverse. But whence the third component of the idea of causation, whereby one thinks that the striking of the stationary ball somehow necessitates that it will move? That necessity has never been seen or otherwise directly observed in past experience, as have the contiguity and temporal order of the striking and moving of billiard balls.
It is important to note that were it not for the idea of necessary connection, there would be no reason to believe that a currently observed cause will produce an unseen effect in the future or that a currently observed effect was produced by an unseen cause in the past, for the mere fact that past instances of the cause and the effect were contiguous and temporally ordered in a certain way does not logically imply that present and future instances will display the same relations. (Such an inference could be justified only if one assumed a principle such as “instances, of which we have had no experience, must resemble those, of which we have had experience, and that the course of nature continues always uniformly the same.” The problem with that principle is that it too stands in need of justification, and the only possible justification is question-begging. That is, one could argue that present and future experience will resemble past experience, because in the past, present and future experience resembled past experience. But that argument clearly assumes what it sets out to prove.)
Hume offered a “skeptical solution” of the problem of the origin of the idea of necessary connection. According to him, it arises from the feeling of “determination” that is created in the mind when it experiences the first member of a pair of events that it is long accustomed to experiencing together. When the mind observes the moving billiard ball striking the stationary one, it is moved by force of habit and custom to form an idea of the movement of the stationary ball—i.e., to believe that the stationary ball will move. The feeling of being “carried along” in this process is the impression from which the idea of necessary connection is derived. Hume’s solution is “skeptical” in the sense that, though it accounts for the origins of the idea of necessary connection, it does not make the causal inferences any more rational than they were before. The solution explains why we are psychologically compelled to form beliefs about future effects and past causes, but it does not justify those beliefs logically. It remains true that our only evidence for these beliefs is our past experience of contiguity and temporal precedence. “All inferences from experience, therefore, are effects of custom, not of reasoning.” Thus it is that custom, not reason, is the great guide of life.
From the time of Plato, one of the most basic notions in philosophy has been “substance”—that whose existence does not depend upon anything else. For Locke, the substance of an object is the hidden “substratum” in which the object’s properties inhere and on which they depend for their existence. One of the reasons for Hume’s importance in the histo...
David Berman looks for similarities and differences in the aims of the two thinkers. There are interesting points of both agreement and disagreement in the lives of George Berkeley (1685-1753) and David Hume (1711-1776), arguably the two greatest British philosophers.
First, I will examine how Berkeley and Hume differ from such predecessors as Descartes and Locke in this respect. I will then focus on the nature and consequences of one problem that their distinctive shared view raises: namely, how one mind can include both extended and unextended beings.
Sep 26, 2024 · David Hume’s philosophical works included A Treatise of Human Nature (1739–40), An Enquiry Concerning the Principles of Morals (1751), An Enquiry Concerning Human Understanding (1758), and Dialogues Concerning Natural Religion (posthumously published in 1779).
This book explores the projectivist strand of Hume’s thought, and how it helps clarify Hume’s position within the realism debate, presenting Hume’s causal account as a combination of projectivism and realism.
Feb 26, 2001 · Today, philosophers recognize Hume as a thoroughgoing exponent of philosophical naturalism, as a precursor of contemporary cognitive science, and as the inspiration for several of the most significant types of ethical theory developed in contemporary moral philosophy. 1. Life and Works. 2.
