I Introduction

Let's assume there are psychological generalizations that the folk rely upon in explaining and predicting the behavior of their fellows. Let's further assume these generalizations are intentional, in that they do their explanatory and predictive work by attributing to the subjects in their domain intentional mental states such as beliefs, desires, and the like. Then we can define a broad intentional psychology as one that adverts only to broad, viz. purely denotational/ truth-conditional, mental contents in its generalizations; so the sentences expressing its generalizations should be read transparently. A narrow psychology is one that is not so restricted. Accordingly, sentences expressing narrow generalizations will contain opaque contexts, indicated by ‘that’ -clauses ('believes that…,’ ‘desires that … ,’ and the like). Here is an example of the sort of generalization we have in mind:

In The Sources of Normativity, Christine Korsgaard affirms that Enlightenment morality is true: humanity is valuable. To many of us few claims seem more obvious. Yet Enlightenment thinkers such as Kant do not limit themselves to affirming that humanity is valuable. They appeal to reason in an effort to establish it. They try to show that, in some sense, we are rationally compelled to recognize the value of humanity. Korsgaard joins in this effort. She champions the claim that unless we take humanity to be valuable, we condemn ourselves to complete practical skepticism, i.e., to the view that we have no reason to do anything at all.

Korsgaard discusses two arguments that, she believes, support this claim. The first she attributes directly to Kant in a series of influential papers on his ethics. The second argument, which she calls a ‘fancy new model’ of the first, she constructs under her own name in The Sources of Normativity. I will defend the view that neither of these arguments succeeds. In doing so, I will not be trying to show that we are mistaken in believing humanity to be valuable.

Throughout the Politics, Aristotle discusses claims to the supreme authority (to kyrion) in a polis. Some claims are made on qualitative grounds, and here Aristotle mentions freedom, wealth, education, good birth, military power, and virtue (1268a21-23, 1279a40-b5, 1283a16-18, 1283bl, 1294a20, 1296b18, 1301a39-1301b4). Other claims are made on quantitative grounds (1296b17), and here Aristotle refers to the superior numbers of the multitude (1296b19). Since he takes all these claims seriously and since several parties may claim power on different grounds, quarrels (amphisbētēsis, 1283b3, also 1283a24) are to be expected. As opposed to this, in the ideal polis all claims are made by the same group. Claims on qualitative grounds make us inquire about possible bearers of such qualities. For example, is a claim on account of wealth, a claim on behalf of wealthy individuals, or may it also be an argument on behalf of groups none of whose members qualifies, but which qualifies as a group if its wealth is taken to be the sum over the individual shares? This question is significant because different answers lead to different distributions of power.

If by the term ‘matter’ is meant the extended, movable, and corporeal stuff out of which perceptible objects are made, then, according to one interpretative tradition, there is nothing in Aristotle's account of the world that corresponds to matter in the above sense of physical stuff. Aristotle does indeed describe certain things as extended, movable, and corporeal: for example, the five elements, earth, water, air, fire, and ether, as well as everything made out of them. He also has the concept of a material cause, that is, the raw materials out of which something can be made or generated, and he makes frequent use of this concept in his analysis of perceptible substances. Still, the fact that Aristotle thought about what perceptible substances are made of is insufficient evidence for attributing to him the concept of matter as physical stuff. In addition, we would want to know whether he thought that all perceptible substances are extended, movable, and corporeal precisely because they are made out of matter, and whether any aspect of their behavior is to be explained simply by virtue of their nature as material objects.