"Nothing short of the power of the Almighty ... can prove to you that this is the work of God." - Brigham Young

"Nothing short of the power of the Almighty, nothing short of the Holy Spirit of Jesus Christ, can prove to you that this is the work of God."

"Nothing short of the power of the Almighty, nothing short of the Holy Spirit of Jesus Christ, can prove to you that this is the work of God.  Men uninspired of God cannot by their worldly wisdom disprove it, or prevail against it; neither can they by wisdom alone prove it to be true, either to themselves or to others.  Their not being able to prevail against it does not prove it to be the kingdom of God, for there are many theories and systems on the earth, incontrovertable by the wisdom of the world, which are nevertheless false.  Nothing less than the power of the Almighty, enlightening the understandings of men, can demonstrate this glorious truth to the human mind."  - Brigham Young ("The Privileges and Blessings of the Gospel," Salt Lake City, February 20, 1853, Journal of Discourses Vol. 1, p. 310. )