Edith Stein understands the identity (ipseity- selfness) as a personal execution (Vollzug der Person) and as an execution of knowledge (Vollzug der Erkenntnis). Therefore, identity means identification. (1) The personal execution is also double : First, Identityl is the original conscience of oneself and the Access to personality and individuality. Second, the oneself meditates on the process of personal identification and notes its conditions. Stein analizes the constitution of personal identityl. (2) Identity as a personal knowledge ( the third sense of identity) in Stein it refers to the coincidence in essence. Essence in this sense is identical to an essence already known before. 62 In postmodern philosophical context, the phenomenological análisis of essence and essential identity are doubted. This needs a more ample foundation by a negative and existential phenomenology, which has its foundation in Stein’s work.