The Commonitorium

Description

cited in Dei Filius:

For the doctrine of faith which God hath revealed has not been proposed, like a philosophical invention, to be perfected by human ingenuity, but has been delivered as a divine deposit to the Spouse of Christ, to be faithfully kept and infallibly declared. Hence, also, that meaning of the sacred dogmas is perpetually to be retained which our holy mother the Church has once declared; nor is that meaning ever to be departed from, under the pretense or pretext of a deeper comprehension of them. Let, then, the intelligence, science, and wisdom of each and all, of individuals and of the whole Church, in all ages and all times, increase and flourish in abundance and vigor; but simply in its own proper kind, that is to say, in one and the same doctrine, one and the same sense, one and the same judgment. [Vincent. of Lerins,Common. n. 28.]

Also, there's the famous book 1, chapter 2 quote.