In this paper, we try to establish a connection between Heidegger’s conception of authenticity and the Aristotelian σπουδαῖος. Through an exploration of Heidegger’s reference to authenticity, Aristotle’s concept of σπουδαῖος, and a reinterpretation of Heidegger’s reappropriation of certain Aristotelian concepts, such as αἴσθησις, πίστις and προαίρεσις, we wish to show that the authentic Dasein has assumed full responsibility of its role in life, and it has developed ontologically, in the same way a σπουδαῖος man acknowledges one’s full potentiality in purposeful (...) action. The σπουδαῖος as the authentic Dasein grasps the moment, gives rise to the occasion by directing one’s judgement towards the praxis, and comes to provide its own stance in the facticity of life. In fact, the σπουδαῖος, like an authentic Dasein, in a way, comes to reflect the synthesis between θεωρία and πράξις as well as an implicit effort for Dasein to uncover itself to the world and to allow the world to uncover to it. (shrink)