Abstract

Although Hans Jonas's theory of responsibility has been influential on continental European environmental ethics, his philosophy of life, which seeks to rehabilitate a teleological account of living beings and describe their differing degrees of ‘existential freedom’, is less well-known. In this article, I reconstruct the stages of Jonas's phenomenological account and address the key criticisms levelled at it. I argue that although Jonas's theory is flawed by internal contradictions, these may be rectifiable, and, if so, his philosophy of life could also provide an ontological rationale for a biocentric ethic. I conclude that for these reasons his work deserves greater scholarly attention.