The Anabaptist Vision by Harold S. Bender - A classic essay defining the spirit and purposes of the original Anabaptists in the 16th century:
discipleship - Christianity is following Jesus in everyday life;
church - believers commit to each other as well as to Christ;
love and nonresistance - followers of Jesus reject involvement in violence and warfare.
Originally given as the presidential address to the American Society of Church History in 1943, this Anabaptist Vision became "a slogan and a gentle battle-cry for a whole generation of Mennonites."