Originally posted by frogstomp
this might be worth a read
http://www.drbo.org/popeleo.htm
skimming through it i pick up these tidbits:
15........not to depart from the literal and obvious sense, except only where reason makes it untenable or necessity requires
[41] -- that the sense of Holy Scripture can nowhere be found incorrupt out side of the Church, and cannot be ...[text shortened]... cquire a marvelous facility in detecting and avoiding the fallacies of human science, ......
It would be even better if you quoted in context:
15. But he must not on that account consider that it is forbidden, when just cause exists, to push inquiry and exposition beyond what the Fathers have done; provided he carefully observes the rule so wisely laid down by St. Augustine-not to depart from the literal and obvious sense, except only where reason makes it untenable or necessity requires;(40) a rule to which it is the more necessary to adhere strictly in these times, when the thirst for novelty and unrestrained freedom of thought make the danger of error most real and proximate... But it is most unbecoming to pass by, in ignorance or contempt, the excellent work which Catholics have left in abundance, and to have recourse to the works of non-Catholics - and to seek in them, to the detriment of sound doctrine and often to the peril of faith, the explanation of passages on which Catholics long ago have successfully employed their talent and their labour. For although the studies of non-Catholics, used with prudence, may sometimes be of use to the Catholic student, he should, nevertheless, bear well in mind-as the Fathers also teach in numerous passages(41) - that the sense of Holy Scripture can nowhere be found incorrupt outside of the Church, and cannot be expected to be found in writers who, being without the true faith, only gnaw the bark of the Sacred Scripture, and never attain its pith.
23. In order that all these endeavours and exertions may really prove advantageous to the cause of the Bible, let scholars keep steadfastly to the principles which We have in this Letter laid down. Let them loyally hold that God, the Creator and Ruler of all things, is also the Author of the Scriptures - and that therefore nothing can be proved either by physical science or archaeology which can really contradict the Scriptures. If, then, apparent contradiction be met with, every effort should be made to remove it. Judicious theologians and commentators should be consulted as to what is the true or most probable meaning of the passage in discussion, and the hostile arguments should be carefully weighed. Even if the difficulty is after all not cleared up and the discrepancy seems to remain, the contest must not be abandoned; truth cannot contradict truth, and we may be sure that some mistake has been made either in the interpretation of the sacred words, or in the polemical discussion itself; and if no such mistake can be detected, we must then suspend judgment for the time being.
25. ...Finally, We admonish with paternal love all students and ministers of the Church always to approach the Sacred Writings with reverence and piety; for it is impossible to attain to the profitable understanding thereof unless the arrogance of "earthly" science be laid aside, and there be excited in the heart the holy desire for that wisdom "which is from above." In this way the intelligence which is once admitted to these sacred studies, and thereby illuminated and strengthened, will acquire a marvellous facility in detecting and avoiding the fallacies of human science, and in gathering and using for eternal salvation all that is valuable and precious; whilst at the same time the heart will grow warm, and will strive with ardent longing to advance in virtue and in divine love.