Thomas Aquinas is usually considered an empiricist. I suspect though that these epistemological generalizations are overly simplistic and anachronistic. Rationalism v. Empiricism was a 17th and 18th c. debate. Thomas through Aristotle e.g. believed the primacy of experience yet held certain propositions to be self-evidencing knowledge while memory of past events mere opinion.
Who are the key rationalist thinkers who have impacted Christianity and do you know of any good books on this issue?