Harold B. Lee on Missionary Work

Missionary work is but home teaching to those who are not now members of the Church, and home teaching is nothing more or less than missionary work to Church members.
Improvment Era, Dec 1964, 1078

Joseph Fielding Smith on Missionary Work

We have heard that we are all missionaries. Every member . . . is or ought to be a missionary. . . as members of the Church, having pledged ourselves to the advancement of the gospel of Jesus Christ we become missionaries. This is part of the responsibility of every member of the Church
Take Heed to Yourselves, 27-28

David O. McKay on Missionary Work

Every member . . . a missionary.
CR Apr 1959, 122

True Christianity is love in action. There is no better way to manifest love for God than to show an unselfish love for your fellow men. This is the spirit of missionary work.
Gospel Ideals, 129.

George Albert Smith on Missionary Work

That is your mission, my brethren and sisters of the Church, that is your responsibility. Freely you have received and our Heavenly  Father will expect you freely to share with His other sons and daughters these glorious truths.
Sharing the Gospel with Others, 213

Heber J. Grant on Missionary Work

We as a people have one supreme thing to do, and this is to call upon the world to repent of sin, to come to God. And it is our duty above all others to go forth and proclaim the gospel of the Lord Jesus Christ, the restoration again to the earth of the plan of life and salvation . . . We have in very deed the pearl of great price. We have that which is of more value than all the wealth and the scientific information which the world possesses. We have the plan of life and salvation . . . The best way in the world to show our love for our neighbor is to go forth and proclaim the gospel of the Lord Jesus Christ of which he has given us an absolute knowledge concerning its divinity.
CR Apr, 1927,  175-76

Joseph F. Smith on Missionary Work

We have a mission in the world: each man, each woman, each child who has grown to understanding or to the years of accountability, ought . . . to be qualified to preach the truth, to bear testimony of the truth.
Gospel Doctrine, 251-52

Lorenzo Snow on Missionary Work

There is no mortal man that is so much interested in the success of an elder when he is preaching the gospel as the Lord that sent him to preach to the people who are the Lord's children.
Teachings of Lorenzo Snow, 70