Plotinus focuses on eternity (aiôn) and time (khronos) in treatise 3.7 On Eternity and Time.1 His views are rooted in the earlier tradition and are developed through an interpretation of both Plato (in particular the Timaeus) and Aristotle (in particular Physics 4). Yet Plotinus does not merely resume what had previously been stated by his authorities; his exegetical approach is based on the presentation of distinctive views that are connected to Plotinus’ metaphysical outlook, in particular to his theory of intelligible principles. Plotinus’ discussion of eternity and time is actually centred on (1) the notion of eternity as the lack of duration and extension in time (so Plotinus distinguishes eternity from everlastingness), (2) the idea that time is associated with the activity of the soul rather than with the movement of bodies, (3) the notion of ‘life’ as a mode of being that characterizes, in different ways, both the Intellect and the soul and accounts for the nature of eternity and time as well as for the derivation of time from eternity.