You can find a note on a quick comparison between Heidegger and what Levinas brings new to the table here. I made this note to really raise the question of how the overturning of ontology in favour of ethics affects logic (for context: Mohanty claims that Heidegger’s privileging of ontology over logic engenders a pre-theoretical discloure of being).
A Note on Levinas and Heidegger
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