Derrida emphasizes the affirmative character of deconstruction, the ethics of deconstruction.
Deconstruction is not an enclosure in nothingness (a sort of gratuitous chess game), but an openness towards the other ... an otherness that has been dissimulated or appropriated by the logocentric tradition ... The very activity of thinking, which lies at the basis of epistemological, ontological, and veridical comprehension, is the reduction of plurality to unity and alterity to sameness ... To think philosophically is to comprehend, to include, to seize, to grasp and master the other, thereby reducing its alterity.
Deconstruction may therefore be understood as the desire to keep open a dimension of alterity which can neither be reduced, comprehended, nor, strictly speaking, even thought by philosophy' (Kearney, p.123-4, my italics). The crucial 'methodological' point is that it is possible to discern the operations of different ways of meaning simultaneously. To think in multiplicity. Derrida's argument is that the unconditional arises as the interruption, or non-closure, of any determinate context.