In the treatise devoted to eternity and time (III.7) Plotinus begins by reflecting on his own style of philosophizing. These reflections are one of the most important sources for understanding Plotinus's method in general, but it is worth considering them closely in the context of this particular treatise and its topic, for an understanding of Plotinus's approach will help us to follow and better evaluate the general direction of his argument. Plotinus presents us with six aspects. We begin our enquiry (1) with the general notions and presuppositions which will have formed in us a concept of time and of eternity. For Plotinus himself one important and central element of this is the linking of eternity with the unchanging and transcendent intelligible world and time with the physical world of becoming. Clearly Plato lies partly behind this. But what influences may have been at work in the formation of this preliminary concept are of no significance at this stage. Now (2) when we look at our ideas more closely we become more and more puzzled as objections and difficulties arise.