The  » ethical questions  » raised by Aids are not specific to it. Yet, though not specific to it, they may take an examplary character as is evidenced by the clinical situation which we present here. The latter, by confronting the doctors to a specific impossible choice, and putting the  » paternal function  » directly at play, enables us to define what we suggest to call an  » ethical position « , as opposed to the concepts of deontology or morals, and stress its essential link with the  » clinical  » touch understood as an art of the  » case-to-case « , i.e. a place where the singularity of the subject is to be revealed.