 Self-awareness, on these views, is a necessary condition of rationality (conceived as the capacity for critical reasoning or practical deliberation). Burge also makes it clear that he regards the capacity for critical reasoning to be a necessary condition of (conceptual) self-consciousness, since to master and self-ascribe psychological concepts such as belief, once must be able to recognise their role in reasoning, and so employ them (Burge 1996: 97, n.3). As he puts it, 