First Marion G Romney: (Originally spoken 1960, then quoted again in the First Presidency Message in June of 1981).
"I remember years ago when I was a Bishop I had President [Heber J.] Grant talk to our ward. After the meeting I drove him home…Standing by me, he put his arm over my shoulder and said: 'My boy, you always keep your eye on the President of the Church, and if he ever tells you to do anything, and it is wrong, and you do it, the Lord will bless you for it.' Then with a twinkle in his eye, he said, 'But you don't need to worry. The Lord will never let his mouthpiece lead the people astray.'" (Conference Report, October 1960, p. 78).
Contrast that with this:
Joseph Smith: “We have heard men who hold the priesthood remark that they would do anything they were told to do by those who preside over them even if they knew it was wrong; but such obedience is worse than folly to us; it is slavery in the extreme; and the man who would thus willingly degrade himself, should not claim a rank among intelligent beings, until he turns from his folly. A man of God would despise the idea. Others, in the extreme exercise of their almighty authority have taught that such obedience was necessary, and that no matter what the saints were told to do by their presidents, they should do it without any questions. When Elders of Israel will so far indulge in these extreme notions of obedience as to teach them to the people, it is generally because they have it in their hearts to do wrong themselves" (Millennial Star, Volume 14, No. 38, Pages 593-595).