Abstract

In lieu of an abstract, here is a brief excerpt of the content:REID' S CRITICISM OF HUME'S THEORY OF PERSONAL IDENTITY One of the most interesting philosophical controversies is that between Reid and Hume, considered as representatives of two different sorts of empiricism. Hume, for these purposes, represents 'radical' empiricism, and the attempt to base knowledge solely on experience and what can be validly inferred from it, regardless of how far this leads one from everyday notions and beliefs. Reid, in contrast, represents 'common sense' empiricism, and the view that the. results of experience and deduction must conform to a number of 'first principles or intuitive judgments' (Essays on the intellectual powers of man, VI, 4), which aie unprovable, but which no one can avoid accepting. It is important to be clear about the status of Reid' s 'intuitive judgments', or 'principles of common sense'. They are not merely the general beliefs of a particular culture, which could be 'vulgar errors or preJUdICeS''. Nor are they merely beliefs generally held by people uncorrupted by philosophy. They are assumptions which have to be made if theoretical or practical activity is to be possible at all, principles which are always accepted in practice even by those who deny them in theory. For example, although the uniformity of nature is not a logically necessary truth, everybody always thinks and acts in ways that presuppose that it is true: 'Nature is governed by fixed laws, and if it were not so, there could be no such thing as prudence in human conduct.... the whole fabric of natural philosophy is built upon this principle.' (Essays, VI, 5) Again, everyone, even a theoretical determinist, makes moral judgments and deliberates what to do; and these activities presuppose a belief in human free will. (Essays, ibid.) Hume himself, as Reid was aware, accepted the validity of some principles of this sort, notably of the 42. uniformity of nature. But Reid was dissatisfied with Hume's account, partly because he thought Hume had rejected far too much, and partly because of the grounds Hume gives for accepting, for example, the validity of induction, and the existence of the external physical world. Hume regards these beliefs as non-rational, and deriving from our psychological make-up; it is nature and not reason which causes the belief in an ordered physical reality. In Hume's eyes this is a sufficient justification: if our nature compels us to believe something, this is as good a ground for believing it as any other. Reid, on the other hand, believed, first, that there were many more principles of this sort than Hume had acknowledged, and secondly, that the justification of them was rational, and not merely psychologically determined, since it was based on the impossibility of thinking and acting coherently without them. Hence, even though Hume builds up with one hand what he pulls 'down with the other, and destroys the rational basis for belief only to replace it by one based on human nature and psychology, Reid continues to treat him as the archsceptic. In constructing his list of first principles in Essays, VI, 5, Reid explicitly or implicitly attacks Hume's 'scepticism' on five points - the existence of the mind; the existence of the physical world and the reliability of our senses; the reliability of memory; the reliability of reason; and the uniformity of nature. Against this scepticism he deploys three types of argument. The first is the argument from the universal beliefs of mankind, particular!/ as displayed in the structural features supposedly common to all languages. The second is the argument that the position of the sceptic is, when its consequences are worked out, either self-contradictory or incoherent. And the third is the argument already mentioned, that this position is inconsistent with other beliefs which the sceptic inevitably holds, since he thinks and acts in ways which are 43. inconsistent with their falsity, and cannot avoid doing so. To assess the force of Reid' s attacks, we have to consider both the strength of arguments of this sort in general and whether they apply in all these five cases. In this article, I want to concentrate on the first issue of the five, that of personal identity. Apart from displaying Reid...