Piper – Rationality and the Structure of the Self

Adrian Piper’s new two-volume work is available for free on her website (she has self-published due to editorial problems with OUP and CUP). It’s called Rationality and the Structure of the Self: A Two-Volume Study in Kantian Metaethics. I’ve only had a chance to skim through some of the material in the second volume, which looks of a high standard. Take a look if Kantian metaethics in the Rawlsian vein (à la Korsgaard and Darwall) is your cup of tea.

Rationality and the Structure of the Self,
Volume I: The Humean Conception

The Humean conception of the self consists in the belief-desire model of motivation and the utility-maximizing model of rationality. This conception has dominated Western thought in philosophy and the social sciences ever since Hobbes’ initial formulation in Leviathan and Hume’s elaboration in the Treatise of Human Nature. Bentham, Freud, Ramsey, Skinner, Allais, von Neumann and Morgenstern and others have added further refinements that have brought it to a high degree of formal sophistication. Late twentieth century moral philosophers such as Rawls, Brandt, Frankfurt, Nagel and Williams have taken it for granted, and have made use of it to supply metaethical foundations for a wide variety of normative moral theories. But the Humean conception of the self also leads to seemingly insoluble problems about moral motivation, rational final ends, and moral justification. Can it be made to work?

Rationality and the Structure of the Self,
Volume II: A Kantian Conception

Adrian Piper argues that the Humean conception can be made to work only if it is placed in the context of a wider and genuinely universal conception of the self, whose origins are to be found in Kant’s Critique of Pure Reason. This conception comprises the basic canons of classical logic, which provide both a model of motivation and a model of rationality. They also supply necessary conditions both for the coherence and integrity of the self and also for unified agency. The Kantian conception solves certain intractable problems in decision theory by integrating it into classical predicate logic, and provides answers to longstanding controversies in metaethics concerning moral motivation, the nature of rational final ends, and moral justification that the Humean conception engenders. In addition, it sheds light on certain kinds of moral behavior – for example, the whistleblower – that the Humean conception is at a loss to explain.

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