St. Alphonsus Liguori (1696 - 1787), was an 18th-century Italian bishop and theologian, who founded the Congregation of the Most Holy Redeemer, otherwise known as the Redemptorists, an important order of the Catholic church that still exists today. In 1762 he was appointed Bishop. He was a prolific writer, producing such works as "The Glories of Mary" and "The Way of the Cross," which is still used during Lent. He was canonized in 1839 and proclaimed a Doctor of the Church by Pope Pius IX in 1871.
This short treatise was his first, published in 1753. It was originally entitled, 'A method of conversing continually and lovingly with God.' In it, he expands upon St. Paul's theme "rejoice always, pray without ceasing." (1 Thess 5:16)
The source text for this reproduction is: "The complete works of Saint Alphonsus de Liguori: the ascetical works," New York Benziger Brothers, 1886, translated by Eugene Grimm (1835-1891), reprinted later as "How to pray at all times" Catholic Truth Society of Ireland, 1932. This large text version (19 point font size) of this work has been augmented with artwork of the figures referred to in the text.