"93. Ἠρωτήθη γέρων· Τί ἐστιν τὸ ἔργον τοῦ μοναχοῦ; Καὶ ἀπεκρίθη· Διάκρισις."
January 1, 1970
https://en.wikiquote.org/wiki/Sayings_of_the_Desert_Fathers