"The best way to analyse self-identity in the generality of instances is by contrast with individuals whose sense of self is fractured or disabled. […] She may lack a consistent feeling of biographical continuity. An individual may fail to achieve an enduring conception of her aliveness. […] Discontinuity in temporal experience is often a basic feature of such a sentiment. Time may be comprehended as a series of discrete moments, each of which severs prior experiences from subsequent ones in such a way that no continuous ‘narrative’ can be sustained."