I'm reading this passage across Latour's insistence upon chains of translations (Pandora's Hope) and Susan Jarratt's explication of Gorgias notion of Apate (deception) as virtue); Levinas, from his interview with Philippe Nemo:
A radical reflection, obstinate about itself, a cogito which seeks and describes itself without being duped by a spontaneity or ready-made presence, in a major distrust toward what is thrust naturally onto knowledge, a cogito which constitutes the world and the object, but whose objectivity in reality occludes and encumbers the look that fixes it. From this objectivity one must always trace thoughts and intentions back to the whole horizon at which they aim [which includes the Other, the beyond Being, the question of God], which objectivity obscures and makes one forget. Phenomenology is the recall of these forgotten thoughts, of these intentions; full consciousness, return to the misunderstood implied intentions of thought in the world. This complete reflection is necessary to the truth, even if its effective exercise must in doing so make limits appear. It is the presence of the philosopher near to things, without illusion or rhetoric, in their true status, precisely clarifying this status, the meaning of their objectivity and their being, not answering only to the question of knowing "what is?", but to the question "How is what is?", "What does it mean that it is?".
Of course, the "rhetoric" Levinas dismisses here is an Aristotelian rhetoric of the enthymeme, the handmaiden to the Platoinc syllogism; the former persuades by hiding, the latter by abstracting. It is quite different the the sophistic rhetoric Jarratt and McComiskey extract from Gorgias, a rhetoric resonating with Latour's ethics of care, meant to expose the constructions, the limitations, the supplements, the excesses, the fissures, the cracks, the associations, the assemblages, the contexts. A rhetoric that trains its attention on the emergence into being; that transforms Levinas's ontological critique from "what is?" to "what can it do with others?" Levinas's emphasis is on the "whole horizon," on the question of the Other that haunts my relation to others, and my negotiations with neighbors.