Check out this legally free ebook:

  • The Spiritual Life: A Treatise on Ascetical and Mystical Theology, 2nd and revised edition, by the Very Reverend Adolphe Tanquerey, translated by the Reverend Herman Branderis, with a Foreword by the Most Reverend Michael J. Curley, Archbishop of Baltimore (Tournai, Belgium: Society of St. John the Evangelist, Desclée, 1932). With Imprimatur. Available in various formats at Internet Archive and Open Library.

Posted in observance of the Feast of St. Simon Stylites in the Catholic churches of the Byzantine Rite and in the Maronite Catholic church; and the Commemoration of St. Giles in the Latin church (in the Extraordinary Form of the Roman Rite).