 Pleasure neither easily fits, nor has been widely thought by theorists to fit, the standard paradigms of sensation, whether of qualities of outward things or of those of either localized or diffuse bodily sensation, since it seems any typically pleasant sensory state or quality may be enjoyed less or even not at all on occasions, while its sensory quality and intensity remain much the same (Ryle 1949, p. 109; 1954a, p. 58; 1954b, p. 136). The pleasantness of tastes is modulated by nutritional state and experience (Young 1959, Cabanac 1971, Bolles 1991). And differences in mood, temperament, personal history, and how one feels toward a particular person in a specific social context may make all the difference between feeling great pleasure or great distress from what seems the same sensation of touch (cf. Helm 2000 pp. 93–94; 2002, pp. 23–24). Both science and reflection on everyday experience thus distinguish mere sensation proper from hedonic reaction (cf. Aydede 2000). Allowing that there may be ‘sensations of pleasure’, its occasionally accompanying somatic symptoms, is consistent with this distinction between sensation, narrowly conceived, and affective response. John Locke’s (1700/1979, II, xx, 1) picture of pleasure and pain as “simple ideas” learned and understood “only by experience” of “what we feel in ourselves”, distinguishable from any “sensation barely in itself” they may accompany, seems consistent with this distinction between affective feeling and sensation proper made more prominently  later.[2]