Gregory has no doubt that Eusebius was in the wrong, even ridiculously in the wrong, if such be the true interpretation of his curious phrase (Or. xliiii. 28), ἅπτεται γὰρ οὐ τῶν πολλῶν μονὸν, ἀλλὰ καὶ τῶν ἀρίστων, ὁ Μῶμος.  The monasteries to which Basil fled Gregory here (id. 29) calls φροντιστήρια, the word used by Aristophanes (Clouds, 94) of the house or school of Socrates, and apparently a comic parody on δικαστήριον.  It might be rendered “reflectory.”  “Contemplatory” has been suggested.  It is to be noted that Basil in the De Sp. Scto. (see p. 49, n.) appears to allude to the Acharnians.  The friends probably read Aristophanes together at Athens.