Father Reginald Garrigou-Lagrange, O.P., was born in 1877 and is held as one of the greatest Catholic theologians of the twentieth century. He focused his writings against the error of Modernism, which denied the objective truth of Divine revelation, as well as on apologetics, including philosophy. In total, he authored over five hundred books and articles, and wrote as a thorough Thomist. Among Father Garrigou-Lagrange s numerous works are The Three Ages of the Interior Life, Christian Perfection and Contemplation, Christ the Savior, and God, His Existence and Nature. He died in 1964.