Man, I am convinced, is religious by nature. The religious instinct belongs to his very nature, is part of his make-up. It is part of his make-up to be oriented towards God. True, for the vast majority of persons this orientation is unknown, unrecognized. Often it is directed towards things that are less than God; but in so far as the mind is constantly groping towards the ultimate meaning of things and in so far as man's desire craves to be satisfied by this or that good, then the unacknowledged, unrecognized, unknown search for God has begun. Many indeed of man's frustrations are attributable to the fact that he cannot, and does not, in his present condition, attain that ultimate in knowing and that ultimate in loving which belong, so it seems, to the very perfection of his nature. And in so far as he fails to attain it either in the realm of his knowing or in that of his loving, to that extent he remains a frustrated being.
CARDINAL BASIL HUME, OSB The Intentional Life