In the 1950s, Levinas emerged from the circle of intellectuals surrounding the philosopher Jean Wahl as a leading French thinker. His work is based on the ethics of the Other or, in Levinas's terms, on "ethics as first philosophy". For Levinas, the Other is not knowable and cannot be made into an object of the self, as is done by traditional metaphysics (which Levinas called "ontology"). Levinas prefers to think of philosophy as the "wisdom of love" rather than the "love of wisdom" (the usual translation of the Greek "φιλοσοφία"). In his view, responsibility towards the Other precedes any "objective searching after truth".
Levinas derives the primacy of his ethics from the experience of the encounter with the Other. For Levinas, the irreducible relation, the epiphany, of the face-to-face, the encounter with another, is a privileged phenomenon in which the other person's proximity and distance are both strongly felt. "The Other precisely reveals himself in his alterity not in a shock negating the I, but as the primordial phenomenon of gentleness."