Abstract
Are there moral norms or virtues, the application or exercise of which are necessary for successful progress in enquiry? This paper considers the work of one thinker who is convinced of an affi rmative answer to this question, Alasdair MacIntyre. For MacIntyre, the possibility of progress in enquiry depends, ultimately, on the way in which the virtues, and related normative requirements such as that demanding narrative unity to a life, shape and govern the context and practice of enquiry. Correlatively, MacIntyre has identified the role that moral failings can play in intellectual error and corrupted forms of enquiry