See this online text:

  • “Morality, Metaphysics, and the Romance of Friendship”, by Dr. Fiona Lynch, Communio, Volume 47, No.2 (Summer 2020): pp. 247-275. Available in pdf format through this page of Communio.

See also this related text:

  • Friends Forever: St. Augustine, Friendship, and Catholic Evangelism, by Brother André Marie, M.I.C.M. Available in pdf format at Catholicism.org. [N.B., The canonical and doctrinal status of the association behind the website remains uncertain. Please exercise prayerful caution in reading the other texts thereon.]

In belated observance of the Feast of Mary, Martha, and Lazarus of Bethany in the Latin Church, on the secular observance of the International Day of Friendship. For other texts and ebooks, you may access the List of Free eBooks (Arranged by Title), the List of Free eBooks (Grouped by Subject), the List of Worth-It Catholic Books & eBooks, and the main page of the Catholic eBooks Project.