George F. Richards
"I would have the Saints, myself included, avoid as far as possible the disappointments and sorrow here in life, and hereafter, resulting from sin and neglect. Many of our sorrows, and the greatest sorrows we experience in life, are of our own making, and could have been averted.
“Remorse of conscience, resulting from sin, is among the greatest of sorrows, and the hardest to heal. No person can afford to commit sin. There is no satisfaction derived from so doing that will justify the sorrow and remorse that result therefrom. Many of our sorrows in life are the result of [thoughtlessness] on our part. We do things that are unwise, and hurtful to ourselves and to others, not having first thought the thing through, and considered the inevitable consequences.” (Conference Report, Apr. 1945, p. 130)
Harold B. Lee
“Remorse of conscience is the greatest hell. The greatest hell that one can suffer is the burning of one’s conscience. The scriptures say his thoughts will condemn him, he’ll have a bright recollection of all his life (see Alma 12:14; 11:43). You‘ll remember that in the scriptures they speak of the Lamb’s book of life, which is a record kept of man’s life which is kept in heaven. Well, who keeps that record? Not only the records on earth, but there’s a record of our lives in heaven. Men will be judged according to the records that have been kept of our lives. (See D&C 128:6-7.) Now, when we fail of that highest degree of glory and realize what we’ve lost, there will be a burning of the conscience that will be worse than any physical kind of fire that I assume one could suffer.” (Teachings of Harold B. Lee, p. 67)