Fritz Jahr: the invention of bioethics and beyond.

Since the discovery of his work in 1997, Fritz Jahr (1895-1953) has slowly become recognized as the author of the term and concept of bioethics. Jahr's ideas on bioethics were partly different from those shaped by Van Rensselaer Potter in the 1970s and, therefore, might be helpful for the further reform and broadening of modern bioethics. In this article, the authors elucidate ideas from lesser-known works by Jahr, especially those considering animal protection and teaching.