A very interesting and specific topic!

The Philokalia (Φιλοκαλία) is a collection of spiritual texts written by various Eastern Orthodox Church Fathers, compiled in the 18th century by Saint Makarios of Corinth and edited by Saint Nikodemos of Mount Athos. The title "Philokalia" translates to "love of beauty" or "love of the beautiful," reflecting the collection's focus on spiritual growth, inner transformation, and the pursuit of divine beauty.

The Internet Archive holds several scans of public domain translations. Look for: