“We should spend our time and give diligent attention to the training of members of the Church. Teachers who are filled with the spirit of the Lord and who are tried and true, should be called to act in this capacity, and those who are not so tried and proved, should not be called to instruct the members. What do we accomplish if we spend our time and means preaching in the world to make converts to the gospel, if we place instructors before the youth in the stakes and wards who destroy the faith in the hearts of the young people in the divine message intrusted to our care?”

Joseph Fielding Smith

http://www.goodreads.com/quotes/848219-we-should-spend-our-time-and-give-diligent-attention-to