Faith consists in being vitally concerned with that ultimate reality to which I give the symbolical name of God. Whoever reflects earnestly on the meaning of life is on the verge of an act of faith.
Paul TillichWhy does philosophy use concepts and why does faith use symbols if both try to express the same ultimate? The answer, of course, is that the relation to the ultimate is not the same in each case. The philosophical relation is in principle a detached description of the basic structure in which the ultimate manifests itself. The relation of faith is in principle an involved expression of concern about the meaning of the ultimate for the faithful.
Paul Tillich