Nicene and Post-Nicene Fathers, Vol. III:
Doctrinal Treatises of St. Augustin: Section 14

14. But now I will proceed with what I have begun, if I can, and I will so treat with you, as not in the mean while to lay open the Catholic Faith, but, in order that they may search out its great mysteries, to show to those who have a care for their souls, hope of divine fruit, and of the discerning of truth. No one doubts of him who seeks true religion, either that he already believes that there is an immortal soul for that religion to profit, or that he also wishes to find that very thing in this same religion. Therefore all religion is for the sake of the soul; for howsoever the nature of the body may be, it causes no care or anxiety, especially after death, to him, whose soul possesses that whereby it is blessed. For the sake of the soul, therefore, either alone or chiefly, hath true religion, if there be any such, been appointed. But this soul, (I will consider for what reason, and I confess the matter to be most obscure,) yet errs, and is foolish, as we see, until it attain to and perceive wisdom, and perhaps this very [wisdom] is true religion. I am not, am I, sending you to fables? I am not, am I, forcing you to believe rashly? I say that our soul entangled and sunk in error and folly seeks the way of truth, if there be any such. If this be not your case, pardon me, I pray, and share with me your wisdom; but if you recognize in yourself what I say, let us, I entreat, together seek the truth.