And now, young people, thus anchored in the faith, and thus organized, we ask you to join the organizations in your wards, to heed the advice of the President of the Church, to affiliate with your quorums, with your auxiliary organizations, in your fast meetings, and there in these local groups express your thoughts, express your doubts, seek after the truth, apply measures that will appeal to those of your associates, and when you prove those measures to be effective and satisfying to the soul, then can the central organizations take those measures and adapt them to the whole as a universal benefit. In that way, and in that way only, will progress and efficiency be fostered. Don't stand out on the sidelines, and say, "This quorum is not doing its work," but get into the quorum and help it do its work. That is the way which God intends people to work in this Church, and it offers to you one of the best opportunities in the world.

-David O. McKay, Conference Report April 1934, pp. 23-24.

A good friend related an experience with McKay at a reception.  In a moment of courage, the hostess served rum cake.  All the guests hesitated, watching to see what McKay would do.  he smacked his lips and began to eat.  One guest gushed, "But President McKay, don't you know that is rum cake?"  McKay smiled and reminded the guest that the Word of Wisdom forbade drinking alcohol, not eating it.

-Leonard J. Arrington, Adventures of a Church Historian (pg. 42)