Apparently, in an attempt to "truth check" me Joyful Hermit has apodictically claimed Peter Damian never called hermits "ecclesiola" (little churches).Cf., Joyful Christian Hermit (beginning around 10:24) I would ask Joyful to please be more careful in her "Truth Matters" videos. No one can read everything out there on Peter Damian's ecclesiology (at least not in a single afternoon!) but to pronounce unequivocally that he never said something based on a quick Google search while implying someone else made the matter up is both irresponsible and uncharitable. Though I have posted this before here (cf., Feast of St Peter Damian,), here is the most pertinent passage from Damian's letter # 28 (Dominus Vobiscum), section 25:
[[Just as in Greek man is called a microcosm, i.e., a little world (cosmos) because in essential physicality the human being consists of the same four elements of which the whole world is made, so also each one of the faithful [including hermits, Peter Damian's special interest in this letter] is a little Church (ecclesiola),. . . because without violating the mystery of her inner unity, each person also receives all the sacraments that God has given the universal Church. . .]] Dominus Vobiscum, Letter #28 par 23 (Belisle marks this par 23 but the CUA edition differs with par 25). Trans. Peter-Damian Belisle, OSB Cam, Camaldolese Spirituality, Essential Sources p 191 (A similar translation is also found in Fathers of the Church, Medieval Continuation, The Letters of Peter Damian 1-30, Letter #28 par 25) CUA Press, p 270 of pp 255-289.