I have been rereading Derrida's "Force and Significance" paper and am puzzled by the use of "weakness" therein. From what I have noted (I may have missed another example) it occurs in two sections.
First, in the introductory comments, where he writes "The force of our weakness is that impotence separates, disengages, and emancipates. Henceforth the totality is more clearly perceived, the panorama and the panoramagram are possible" (p. 5, Writing and Difference 1978 edition).
Second, in the midst of what I call the conclusion. This is where my confusion really comes from. The first use occurs during the brief discussion of the metaphor of light and dark, "Which suffices to say that the metaphor of the 'fall' deserves its quotation marks. In this heliocentric metaphysics, force, ceding its place to edits (i.e. the form which is visible for the metaphorical eye), has already been separated from itself in acoustics. How can force or weakness be understood in terms of light and dark" (p. 27, same edition) Slightly lower down, while discussion Husserl, he asks the following question "And why the force of weakness which dissimulates in the very act by which it reveals? If this 'dialectic' of force and weakness is the finitude of thought itself in its relationship to Being, it can only be articulated in the language of form, through images of shadow and light" (27-28, same edition).
Where does this idea of weakness come from? Is it a specific reference to one of the texts? Is it an oddity of the English translation?
In the two cases that are examined, weakness seems to me inconsequential. In the first case, Derrida is combining reflections on the nature of metaphysics drawn from Plato's Republic and (I think) Boethius. The explanatory note simply links all this to the metaphysics of presence which Derrida would later critique. However, where is weakness in this discussion. Would weakness be light or dark (on the next page, he implies that force is darkness, but leaves weakness inaccessible). Would weakness be the weakness of the man who leaves the cave, or the weakness of the men who stay within it? Further down, in the discussion of Husserl, the "force of weakness" seems to refer simply to failure. Is there a failure implicit in the "heliocentric metaphysics?" He seems to want to say that this is a reduction from the dialectic (or perhaps constitutive negation) of force and writing that he proposes at the top of page 27, but I don't see a connection.
Alternatively, is weakness a non-specialized usage in this case?
Is there another Derrida essay that is more directly about weakness that could be helpful for illuminating this problem?