"A hard-working, pious schoolmaster or teacher who faithfully trains and educates boys can never be sufficiently rewarded or repaid with money. If I had to give up preaching and my other duties, there is no office I would rather have than that of schoolteacher. For I know that next to preaching, it is the most useful, greatest, and best. In fact, I am not sure which of the two is the better."
Martin Luther in his "Sermon on the Duty of Sending Children to School" as quoted in Martin Luther: Hero of Faith by Frederick Nohl (St. Louis: Concordia, 1962), 104.