The Catholic mind, Schall says, is open to all sources of truth, from all media available to us. We are open to all things but we are able to distinguish between the good and the evil, and clearly perceive truth through the fog. The Catholic mind is to read widely, taking in thoughts from religious and secular sources alike. By doing so, we focus on the key questions in life, questions surrounding Being itself.
(And, for those CUA grads out there, Fr. Schall makes another few mentions of Msgr. Sokolowski.)