Abstract

The search for an ontological basis of medical practice is questioned from the viewpoint that ontologies are always related to the interpreting person in his situation, and that the definition of medicine includes a certain choice. This choice-character comes into greater play when ethical proposals are made. A foundation of medical ethics on an ontology of the healthy body or the factual medical practice is a naturalistic fallacy. Prior to an ontological basis, the ethical event of responsibility for the suffering and transcendent other (Levinas) is constitutive for medicine. This event with its dimension of infinity of the other can only be ontologized by a totalitarian act. A philosophy of medicine should start with the heteronomy of the other.