In this paper, Katja Castillo approaches the phenomenon of teaching through an analysis of Emmanuel Levinas's unedited conference notes titled "Les nourritures," "Les enseignements," and "L'écrit et l'oral." Levinas's thinking prior to the publication of his major works provides an entry point to his philosophy. In this light Castillo interprets his conference notes as laying the groundwork for the argument he develops later in "Totality and Infinity." Drawing on the notes, she describes the phenomenon of teaching as a place to bracket subjective freedom in order to let the other call it into question. The phenomenon of teaching serves as a way to describe the relationship between the same and the other. It is, according to Levinas, a unique interplay between interiority and exteriority, where subjective freedom is intertwined with responsibility to the other, with having to answer to the other. He describes the structure of teaching as characterized by six parts: by being given a past, by reflection, by penetration of freedom, by critical spirit, by transcendence of teaching, and as true symbolism. Following the discussion of Levinas's early writings, Castillo returns to his first major work, "Totality and Infinity" published in 1961, with the intention of examining the evolution of his phenomenological attitude over time. This approach reveals that Levinas's engagement in formulating a philosophy of education was more robust than previous research has indicated.