Reason < Authority < Revelation
Human reasoning is pretty much indispensable in our daily lives as human beings. Not only are we allowed to engage in human reasoning, but we are actively encouraged to do it…. Unless it contradicts the teachings of our priesthood leaders. Priesthood authority trumps human reason.
“We feel very sure that you understand well the doctrines of the Church. They are either true or not true. Our testimony is that they are true. Under these circumstances we may not permit ourselves to be too much impressed by the reasonings of men however well-founded they may seem to be. We should like to say this to you in all kindness and in all sincerity that you are too fine a man to permit yourself to be led off from the principles of the Gospel by worldly learning. You have too much of a potentiality for doing good and we therefore prayerfully hope that you can reorient your thinking and bring it in line with the revealed word of God.”
-12 November 1947 Letter to Lowry Nelson, First Presidency, Archive.org (more…)