Prs. Howard W. Hunter:
Real Christians must understand that the gospel of Jesus Christ is not just a gospel of belief; it is a plan of action. His gospel is a gospel of imperatives, and the very nature of its substance is a call to action. He did not say "observe" my gospel; he said "live" it!
Howard W. Hunter Teachings of Howard W. Hunter

Elder Bednar:
“The gospel of the Savior is not simply about avoiding bad in our lives; it also is … about doing and becoming good”
(Friend Jan 2005)

Prs. Hinckley:
"We live in the world. We work in the world. But we must rise above the world as we pursue the work of the Lord and seek to build His kingdom on the earth." 
(Gordon B. Hinckley, "The State of the Church," Ensign. Nov. 2003, 7)