Evil that used to be localized and covered like a boil is now legalized and paraded like a banner. The most fundamental roots and bulwarks of civilization are questioned or attacked. Nations disavow their religious heritage. Marriage and familyresponsibilities are discarded as impediments to personal indulgence. The movies and magazines and television that shape our attitudes are filled with stories or images that portray the children of God as predatory beasts or, at best, as trivial creations pursuing little more than personal pleasure. And too many of us accept this as entertainment.

"The men and women who made epic sacrifices to combat evil regimes in the past were shaped by values that are disappearing from our public teaching. The good, the true, and the beautiful are being replaced by the no-good, the “whatever,” and the valueless fodder of personal whim. Not surprisingly, many of our youth and adults are caught up in pornography, pagan piercing of body parts, self-serving pleasure pursuits, dishonest behavior, revealing attire, foul language, and degrading sexual indulgence."

- Dallin H. Oaks, "Preparatory for the Second Coming," Ensign, May 2004

https://www.lds.org/ensign/2004/05/preparation-for-the-second-coming.p1?lang=eng

Those who use profanity have a poverty-ridden vocabulary

"Conversations I have had with school principals and students lead me to the same conclusion—that even among our young people, there is an evil and growing habit of profanity and the use of foul and filthy language.

"I do not hesitate to say that it is wrong, seriously wrong, for any young man ordained to the priesthood of God to be guilty of such.

"The taking of the Lord’s name in vain is a most serious matter. ...

"Most of you boys who are here tonight are prospective missionaries. It is as wrong for you to use foul language as it would be for a missionary because you also hold the priesthood. You have authority to act in the name of God. Remember that it is the same voice which prays to the Lord on the one hand and which, on the other hand, when in the company of friends, may be inclined so to speak language foul and filthy. The two kinds of voices are incompatible. ...

"The man or the boy who must resort to such language immediately says that he is poverty-ridden in his vocabulary. He does not enjoy sufficient richness of expression to be able to speak effectively without swearing or using foul words. ...

"Don’t swear. Don’t profane. Avoid so-called dirty jokes. Stay away from conversation that is sprinkled with foul and filthy words. You will be happier if you do so, and your example will give strength to others."

- Pres. Gordon B. Hinckley, First Counselor in the First Presidency, "Take Not the Name of God in Vain," General Conference, Oct 1987
http://www.lds.org/general-conference/1987/10/take-not-the-name-of-god-in-vain?lang=eng

"Many times in our effort to refrain from improper speech, we find words to substitute. Sometimes they are so close to vulgar phrases everyone probably knows that we are substituting words and have not really improved our vocabulary."

- Elder L. Tom Perry, Of the Quorum of the Twelve Apostles, "Thy Speech Reveals Thee," New Era, Jul 2007
http://www.lds.org/new-era/2007/07/thy-speech-reveals-thee?lang=eng

"You know of the profanity of the school grounds and the street. Avoid it. Never let it cross your lips. Show your loyalty to the God of heaven and to the Redeemer of the world by holding Their names sacred."

- Gordon B. Hinckley, President of the Church, "Loyalty," General Conference, Apr 2003
http://www.lds.org/general-conference/2003/04/loyalty?lang=eng

"Profanity is the effort of a feeble brain to express itself forcibly."