When discussing the concept of life, there is neither a single concept of life, nor absolute consensus about a conceptual barycentre, so that consideration of the notion of life is a precondition for establishing and developing an ethics of life, i.e. bioethics. This paper tries to sketch the path(s) leading from the notion(s) of life to an ethics of life by recalling some remarkable (proto)bioethical conceptions: Hans Jonas’s integrative philosophy of life (philosophical biology and ethics of responsibility), Fritz Jahr’s bio-ethics, Albert Schweitzer’s ethics of reverence for life, and Arne Naess’s deep ecology (ecosophy).Nema jednog i jedinstvenog pojma života, a nema ni apsolutnog konsenzusa oko konceptualnog težišta u raspravama o pojm...