The main aim of this paper is to explore why it is so important for Hume to defi ne ‘cause’ as he does. This will shed light on the signifi cance of the natural/philosophical relation (hereafter NPR) distinction in the Treatise. Hume's use of the NPR distinction allows him to dismiss on general grounds conceptions of causation at odds with his own. In particular, it allows him to avoid having to engage in detailed re-interpretation of potentially confl icting theories formulated (...) by natural philosophers. Moreover, it provides an instance of the normative nature of Hume's “science of man.” The paper argues that the NPR distinction - in conjunction with the so-called copy principle - is meant to undercut appeals to the authority of theories not founded on Hume's “principles.” In order to illustrate its claims about Hume, this essay explores some aspects of Newton's natural philosophy. Finally, this paper resolves a long-standing interpretive problem: how to reconcile Hume's two “defi nitions” of causation in the Treatise. (shrink)

The main aim of this paper is to explore why it is so important for Hume to defi ne ‘cause’ as he does. This will shed light on the signifi cance of the natural/philosophical relation (hereafter NPR) distinction in the Treatise. Hume's use of the NPR distinction allows him to dismiss on general grounds conceptions of causation at odds with his own. In particular, it allows him to avoid having to engage in detailed re-interpretation of potentially confl icting theories formulated (...) by natural philosophers. Moreover, it provides an instance of the normative nature of Hume's “science of man.” The paper argues that the NPR distinction - in conjunction with the so-called copy principle - is meant to undercut appeals to the authority of theories not founded on Hume's “principles.” In order to illustrate its claims about Hume, this essay explores some aspects of Newton's natural philosophy. Finally, this paper resolves a long-standing interpretive problem: how to reconcile Hume's two “defi nitions” of causation in the Treatise. (shrink)

Hume regards the ‘absolute’ necessity attending demonstrable propositions as an expression of the limitations of human imagination. When we register our modal commitments in ordinary descriptive language, affirming that there are such-and-such absolute necessities, possibilities, and impossibilities, we are projecting our sense of what the human mind can and cannot conceive. In some ways the account parallels Hume’s famous treatment of the necessity of causes, and in some respects it anticipates recent expressivist theories of absolute modality. I marshal the evidence (...) for this interpretation, show how it can explain a number of otherwise puzzling features of Hume’s modal epistemology and metaphysics, and situate this account of our modal discourse in Hume’s wider programme for a science of human nature. (shrink)

I outline Hume’s views about conceivability evidence. Then I critically scrutinise two threats to conceivability-based modal epistemology. Both arise from Hume’s criticism of claims to knowing necessary causal relationships: Firstly, a sceptical stance towards causal necessity may carry over to necessity claims in general. Secondly, since – according to a sceptical realist reading – Hume grants the eventuality of causal powers grounded in essential features of objects, conceivability-based claims to comprehensive metaphysical possibilities seem endangered. I argue that although normal conceivability-based (...) claims are defeasible, they are prima facie vindicated. Humes Ansichten über Vorstellbarkeit als Indikator für Möglichkeit werden zusammengefasst. Dann werden zwei Schwierigkeiten für eine auf Vorstellbarkeit basierende modale Erkenntnistheorie aufgeworfen. Beide entstehen aus Humes Kritik an Ansprüchen aufWissen notwendiger kausaler Beziehungen. Erstens könnte sich eine skeptische Haltung gegenüber kausaler Notwendigkeit auf Ansprüche, notwendige Zusammenhänge zu kennen, im allgemeinen auswirken. Zweitens gesteht Hume gemäß einem skeptischen Realismus die Eventualität kausaler Kräfte zu, die in wesentlichen Eigenschaften der Dinge gründen. Dies scheint unvereinbar mit der auf Vorstellbarkeit gestützten Behauptung umfassender metaphysischer Möglichkeiten. Dagegen soll gezeigt werden, dass auf Vorstellbarkeit gestützte modale Wissensansprüche zwar widerlegbar, aber prima facie gerechtfertigt sind. (shrink)

Hsueh M. Qu has recently argued that Hume's famed "Separability Principle" from the Treatise entangles him in a contradiction. Qu offers a modified principle as a solution but also argues that the mature Hume would not have needed to avail himself of it, given that Hume's arguments in the first Enquiry do not depend on this principle in any form. To the contrary, I show that arguments in the first Enquiry depend on this principle, but I agree with Qu that (...) Qu's solution to Hume's quandary frees him of the contradiction. Next, I compare Qu's solution to Hume's original position. By analyzing the divergent forms of Hume's "Dictum" that follow from them, I show that Qu's solution and Hume's original position have significantly different consequences in a range of domains, including Hume's modality. Generally, Qu's solution fits better with Hume's other commitments—even though Hume often fails to recognize it—thereby increasing its plausibility. (shrink)