Practical reasoning in contemporary Western societies is characterised by an unprecedented degree of idiosyncrasy and demands of personal authenticity. This has resulted from the decline of traditional moral authorities, the rise of individualistic lifestyles, increasing multiculturalism and rapid technological advance. These developments have given rise to reflection on the notion of 'reasons of one's own', an examination of the intelligibility of reasons that are closely connected to a particular agent, and recognised as such by others, although not shared by them. Problems addressed by the...