John Taylor on Missionary Work

Our duty is to preach the gospel to all men . . . This is what God expects of us.
The Gospel Kingdom, 234-5

Brigham Young on Missionary Work

There is neither man or woman in the Church who is not on a mission.  That mission will last as long as they live, and it is to do good, to promote righteousness, to teach the principles of truth, and to prevail upon themselves and everybody around them to live those principles that they may obtain eternal life.
Discourses of BY, 322