This paper studies the connections between the notions of prolonging life and a good death in Antiquity. It is demonstrated that while prolonged life generally meant forestalling the human constitution’s death, ancient philosophers also pointed to the limitations of prolongation. The paper shows how philosophers welcomed prolonged life when it was shown to foster movement toward the good, such as self-realization and social usefulness. Yet, they rejected prolongation when it led to the perpetuation of evil, such as social uselessness and (...) suffering. We ask whether a contemporary good death is a mercy killing or an improvement of prolonged life, as the ultimate end of “goods practicable for man”. (shrink)