brought forth, Aristotle states twice that the Megarians brush aside and annul something and deny its value. First he states that κίνησις does not receive its due (a14); then: the difference between δύναμις and ἐνέργεια is not taken into account (a19-20). Evidently what is being annulled in both places hangs together. The brushing aside of the difference between δύναμις and ἐνέργεια is in itself the brushing aside of κίνησις. This can be the case only if just these two are essentially related to κίνησις. even while their difference must be observed. If κίνησις is rescued, then the difference between δύναμις and ἐνέργεια is secured as well.
With this, however, it is expressed as tangibly as possible: δύναμις and ἐνέργεια are here in chapter three taken as κατὰ κίνησις. Not only is there no occasion to conclude that there is a premature introduction of the later theme of ἐνέργεια ἐπὶ πλέον, but it is stated with overwhelming clarity: here ἐνέργεια κατὰ κίνησις is being dealt with. If what matters here is emphasizing the difference between ἐνέργεια κατὰ κίνησιν over and against δύναμις κατὰ κίνησιν, then this implies at the same time that the most proper theme besides δύναμις is the ἐνέργεια κατὰ κίνησις.
All the same, we must now ask: (1) How is the preservation of the heterogeneity of δύναμις κατὰ κίνησιν and ἐνέργεια κατὰ κίνησις connected with the securing of the phenomenon of κίνησις? (2) How is this securing for its part connected with the correct resolution of the guiding question of chapter three that we established; namely, how is it connected with the question concerning the being present of δύναμις qua δύναμις, of capability as capability prior to all actualization in enactment? The answer to this question must arise from an interpretation of the following positive discussion and determination of δυνατὸν ὂν ᾗ ὄν and of ἐνέργεια κατὰ κίνησις.
§ 22. Ἐνέργεια κατὰ κίνησις. The actuality of being capable is co-determined by its essence—to this essence, moreover, belongs its actuality
Before we continue with the interpretation, let us attempt briefly to coalesce still one more time the basic problem being dealt with here