Spencer W. Kimball
"The strengthening of family ties should become a rallying cry for Latter-day Saint families everywhere. So also should a return to chastity, our most valuable possession. Chastity and virtue are 'most dear and precious above all things' (Moro. 9:9), more valuable than rubies or diamonds, than herds and flocks, than gold and silver, or than automobiles and land. But, sadly, in many cases they are on sale at the cheapest shops and at the cheapest prices." (Ensign, Nov. 1979, "We Need a Listening Ear")
Neal A. Maxwell
"When we think of this constellation of reasons (why the Church is constantly concerned with freedom from sin), we can understand why it is not just recurring rhetoric when prophets like Moroni observe that the loss of chastity is the loss of that which is precious above all things. (See Moroni 9:9.) And why, so many times, the writers of the scriptures, observing their own people's decadence, have equated ripening in iniquity with the spread of fornication and adultery. (See Helaman 8:26.)" (Notwithstanding My Weakness, p. 100)