This paper considers whether and how 'vitalism' might be considered relevant as a concept today; whether its relevance should be expressed in terms of disciplinary demarcations between the life sciences and the natural sciences; and whether there is a fundamental incompatibility between a 'vitalism of process' and a 'vitalism as pathos' (Osborne, 2016). I argue that the relevance of vitalism as an epistemological and ontological problem concerning the categorical distinction between living and nonliving beings must be contextualised historically, and referred exclusively to the epistemic horizon defined by classical physics. In contrast to this, drawing on the philosophies of Canguilhem, Whitehead, and Atlan, I propose an appreciation of the contemporary relevance of vitalism premised on the pathic and indeterminate character of nature as a whole. From this perspective vitalism expresses a politically significant ethos concerning the relationship between life, knowledge, problems and their solutions.