Ethics (n.) is an affirmation of alterity.
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Ethics (n.) is necessarily in an ethical relation to the other which produces a curvature of intersubjective space.
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Ethics (n.) is not at the level of consciousness or reflection... it rather takes place at the level of sensibility or pre-conscious sentience. The levinasian ethical subject is a sentient self before being a thinking ego. The bond with the other is affective.
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Ethics (n.) is the calling into question of my spontaneity by the presence of the other (i.e. His strangeness, his irreducibility, my thoughts and passions).