In September 1923, Daujat entered Lycée Janson-de-Sailly where he studied mathematics. Meanwhile, his former high school biology teacher Pastor Jules Lefevre directed him toward the philosophy of Saint Thomas Aquinas. Daujat also discovered the philosophy of Jacques Maritain, who greatly influenced his own work. Jules Lefevre then introduced him to Amédée d'Yvignac, who had founded the French Gazette, which was subtitled "organ of Christian politics." Jean Daujat collaborated in this review along with Maritain, Henri Massis and Henri Gheon.
