But while the Atonement is meant to help us all become more like Christ, it is not meant to make us all the same. Sometimes we confuse differences in personality with sin. We can even make the mistake of thinking that because someone is different from us, it must mean they are not pleasing to God. This line of thinking leads some to believe that the Church wants to create every member from a single mold—that each one should look, feel, think, and behave like every other. This would contradict the genius of God, who created every man different from his brother, every son different from his father. Even identical twins are not identical in their personalities and spiritual identities. It also contradicts the intent and purpose of the Church of Jesus Christ, which acknowledges and protects the moral agency—with all its far-reaching consequences—of each and every one of God’s children. As disciples of Jesus Christ, we are united in our testimony of the restored gospel and our commitment to keep God’s commandments. But we are diverse in our cultural, social, and political preferences.

Elder Uchtdorf

https://www.lds.org/general-conference/2013/04/four-titles

"The Prophet Joseph Smith confirmed the Savior’s central role in our doctrine in one definitive sentence: “The fundamental principles of our religion are the testimony of the Apostles and Prophets, concerning Jesus Christ, that He died, was buried, and rose again the third day, and ascended into heaven; and all other things which pertain to our religion are only appendages to it.”

Elder Christofferson, May 2012, The Doctrine of Christ

http://www.lds.org/general-conference/2012/04/the-doctrine-of-christ?lang=eng