How can the philosophical and psychiatric theories about the subject help us to consider the place of the human being, his role, his interactions with the institution, or his involvement in the city? How can we care for him/her when the feeling of the erosion of self is reinforced by new or revived psychological or social alienation? How, within the hospital, at the heart of the world of health and illness, can we think about the superior quality of the subject when he or she is vulnerable, sometimes scarred by trauma, and insecure in his or her individuation processes?