Those who are careful and thoughtful in courtship will usually be careful and thoughtful in marriage

"Those who are careful and thoughtful in courtship will usually be careful and thoughtful in marriage. Those who thoughtfully enter the House of the Lord to be sealed for time and eternity are much less likely to experience divorce and difficulty, not only because of the influence of that sealing ceremony, but because usually they are better prepared for marriage in the first place. They have not only their young love for each other, but a common bond of love for the gospel of Jesus Christ which they knew before they knew each other. They also have some sense of the spirit of sacrifice and selflessness which underlies every happy marriage in countless ways."

- Pres. Spencer W. Kimball, President of the Church, "Boys Need Heroes Close By," General Conference, Apr 1976
http://www.lds.org/general-conference/1976/04/boys-need-heroes-close-by?lang=eng