About Reginald Garrigou-Lagrange:
Réginald Marie Garrigou-Lagrange was a French Catholic theologian. He has been noted as a leading neo-Thomist of the 20th century, along with the likes of Jacobus Ramírez, Édouard Hugon, and Martin Grabmann. He taught at the Dominican Pontifical University of St. Thomas Aquinas, Angelicum in Rome from 1909 to 1960. Here he wrote his magnum opus, The Three Ages of the Interior Life (Les Trois Ages de la Vie Interieure) in 1938.