The Augustinianism of Thomas Aquinas is often neglected, partly because he does not go to great lengths to prove his theological pedigree – it is assumed in many places. The following quote, in which Thomas is stating the errors into which one may fall while studying sacred doctrine, places him within the tradition of fides quaerens intellectum:
[O]ne may err because in matters of faith he makes reason precede faith, instead of faith precede reason, as when someone is willing to believe only what he can discover by reason. It should in fact be just the opposite. Thus Hillary says: ‘Begin by believing, inquire, press forward, persevere.’” (Expositio super librum Boethii De trinitate, Q. 2, a.1, resp.)