τὴν οἴησιν ἔλεγε προκοπῆς ἐγκοπήν → he used to say, Opinion forming is the stoppage of progress
tophus tophi N M :: tufa
tōphus: i, and its derivv., v. tofus.
tōphus, tōphīnus, tōphāceus, tōphīcius, tōphōsus, s. tofusetc.