τὴν οἴησιν ἔλεγε προκοπῆς ἐγκοπήν → he used to say, Opinion forming is the stoppage of progress
cantillo: āvi, ātum, 1,I v. dim. a. canto, to sing low, to hum (post-class.; perh. only in App.), App. M. 4, p. 146; id. Flor. 1, p. 342, 8; 3, p. 388, 13 al.