I believe that a true philosopher is anyone who “loves wisdom” (which is the meaning of the word “philosophy”), and who therefore seeks it out in earnestness. Anyone who is not content to just accept truth, but who seeks to understand it as well, who contemplates on it, who uses his sense of reason to dissect it and grow in it. Practically speaking, this does mean that true philosophers tend to be the “thinkers”, those who are not content to just go about their daily lives, but who have a need to contemplate about things as well.
That said, as a Catholic I believe Catholics absolutely should be willing to “just accept truth” regardless of understanding, but just because we are willing to accept truth “no matter what” does not mean that we can’t seek to understand it farther at the same time. A philosopher is willing to “just accept truth” if he must, but he’s never content with it.
From our own theological point of view, the ultimate realization of a philosopher’s dream can only come in the Beatific Vision, when at last we will fully see and understand all which, on this earth, we can only understand in part. So I dare say that a true philosopher will never be content with his search until he has attained that ultimate and perfect understanding of Truth.
But I also believe that there is a sort of philosophy in ruminating on Truth. That is to say, a philosopher need not constantly be seeking new truths or new insights, but in his love for Truth he may also derive great joy just in contemplating those truths and insights he has already obtained. After all, there is no requirement in “loving wisdom” that says it must be NEW or NOVEL truths that one loves. So in that sense of the word, anybody who even loves to ruminate on Truth, rather than just “accepting it but not really reflecting on it,” might be said to be a philosopher as well, at least in the purest sense of the word…
Blessings in Christ,
KindredSoul