Eric S. Nelson's essay on biological and historical life explores Heidegger 'between Levinas and Dilthey'. It is a welcome and helpful appreciation of Heidegger's relation to naturalism and to questions of life. As Nelson correctly notes at the start, phenomenology has had an uneasy relationship with the categories of nature and life, and with biology in general, since it locates in them reductionist dangers. However, as he also rightly notes, the work of Heidegger is marked, at least in part, by the repeated attempt to think the notion of 'life', and also that of nature as physis.