In the late 1940s, he attended the , in Algiers; in 1949 he moved to Paris, attending the Lycée Louis-le-Grand, where his professor of philosophy was Étienne Borne. At that time he prepared for his entrance exam to the prestigious École Normale Supérieure (ENS); after failing the exam on his first try, he passed it on the second, and was admitted in 1952. On his first day at ENS, Derrida met Louis Althusser, with whom he became friends. After visiting the Husserl Archive in Leuven, Belgium (1953–1954), he completed his master's degree in philosophy ("") on Edmund Husserl (see below). He then passed the highly competitive "agrégation" exam in 1956. Derrida received a grant for studies at Harvard University, and he spent the 1956–57 academic year reading James Joyce's "Ulysses" at the Widener Library. In June 1957, he married the psychoanalyst Marguerite Aucouturier in Boston. During the Algerian War of Independence of 1954–1962, Derrida asked to teach soldiers' children in lieu of military service, teaching French and English from 1957 to 1959.