Tertullian

“ But at the outset I lay down (this position) that there is some one, and therefore definite, thing taught by Christ, which the Gentiles are by all means bound to believe, and for that purpose to “seek,” in order that they may be able, when they have “found” it, to believe. However, [9] there can be no indefinite seeking for that which has been taught as one only definite thing. ”

“ Not to be contented with Truth, once known, is a sin preceding that against the Holy Spirit, and this state of mind explains the judicial blindness inflicted on Lapsers, as asserted by St. Paul, 2 Thess. ”