One of two philosophy courses I took at LSU was "Christian Philosophy", taught by an old family friend who happens to be a leading Farrer scholar (a fact I only recently learned). The other course was "Introduction to Philosophy", PHIL 1001, which was also officially known by another, one-word name - "Logic". So it is with some sense of divine serendipity and personal appreciation for Austin Farrer (and Dr. Ed Henderson) that I post this quote I've been saving for a while from the Philosopher's most famous article (emphases mine):
It would certainly be impertinence to suggest that the scholars who established the Q hypothesis reasoned falsely or misunderstood their own business; no less an impertinence than to talk of the great Scholastics so. St. Thomas understood the business of being an Aristotelizing Augustinian, and if I am not his disciple, it is not because I find him to have reasoned falsely. It is because I do not concede the premisses from which he reasoned. And if we are not to be Streeterians, it will not be because Dr. Streeter [56] reasoned falsely, but because the premisses from which he reasoned are no longer ours.Please note the mind of the philosopher on display, and never forget: Logical arguments always depend on whether we accept their first premisses.
Thus, christian and non-christian scholars have something in common - they both have to decide at what point to start from. :)