I loved this quote from chapter 10 of the Joseph Fielding Smith manual:
So far as the philosophy and wisdom of the world are concerned, they mean nothing unless they conform to the revealed word of God. Any doctrine, whether it comes in the name of religion, science, philosophy, or whatever it may be, if it is in conflict with the revealed word of the Lord, will fail. It may appear plausible. It may be put before you in language that appeals and which you may not be able to answer. It may appear to be established by evidence that you cannot controvert, but all you need to do is to abide your time. Time will level all things. You will find that every doctrine, every principle, no matter how universally believed, if it is not in accord with the divine word of the Lord to his servants, will perish. Nor is it necessary for us to try to stretch the word of the Lord in a vain attempt to make it conform to these theories and teachings. The word of the Lord shall not pass away unfulfilled, but these false doctrines and theories will all fail. Truth, and only truth, will remain when all else has perished.