Value theory John McDowell

In parallel with the development of this work on mind and language, McDowell also made significant contributions to moral philosophy, specifically meta-ethical debates over the nature of moral reasons and moral objectivity. McDowell developed the view that has come to be known as secondary property realism, or sensibility or moral sense theory. The theory proceeds via the device of an ideally virtuous agent: such an agent has two connected capacities. She has the right concepts and the correct grasp of concepts to think about situations in which she finds herself by coming to moral beliefs. Secondly, for such a person such moral beliefs are automatically overriding over other reasons she may have and in a particular way: they "silence" other reasons, as McDowell puts it. He believes that this is the best way to capture the traditional idea that moral reasons are specially authoritative.
McDowell also here departs from the standard interpretation of the Humean theory of how action is motivated. The Humean claims that any intentional action, hence any moral action, is motivated by a combination of two mental states, one a belief and one a desire. The belief functions as a passive representation; the desire functions to supply the distinctively motivational part of the combination. On the basis of his account of the virtuous moral agent, McDowell follows Thomas Nagel in rejecting this account as inaccurate: it is more truthful to say that in the case of a moral action, the virtuous agent's perception of the circumstances (that is, her belief) itself justifies both the action and the desire. For example, we cannot understand the desire, as a Humean original existence, without relating it back to the circumstances that impinged on the agent and made her feel compelled to act. So while the Humean thesis may be a truth about explanation it is not true about the structure of justification and it ought to be replaced by Nagel's motivated desire theory as set out in his The Possibility of Altruism (Oxford University Press, 1970).
Implicit in this account is a theory of the metaphysical status of values: moral agents form beliefs about the moral facts, which can be straightforwardly true or false. However, the facts themselves, like facts about colour experience, combine anthropocentricity with realism. Values are not there in the world for any observer, for example, one without our human interest in morality. However, in that sense, colours are not in the world either, but one cannot deny that colours are both present in our experience and needed for good explanations in our common sense understanding of the world. The test for the reality of a property is whether it is used in judgements for which there are developed standards of rational argument and whether they are needed to explain aspects of our experience that are otherwise inexplicable. McDowell thinks that moral properties pass both of these tests. There are established standards of rational argument and moral properties fall into the general class of those properties that are both anthropocentric but real.
The connection between McDowell's general metaphysics and this particular claim about moral properties is that all claims about objectivity are to be made from the internal perspective of our actual practices, the part of his view that he takes from the later Wittgenstein. There is no standpoint from outside our best theories of thought and language from which we can classify secondary properties as "second grade" or "less real" than the properties described, for example, by a mature science such as physics. Characterising the place of values in our worldview is not, in McDowell's view, to downgrade them as less real than talk of quarks or the Higgs boson.