Bonhoeffer on Christian Community

"Innumerable times a whole Christian community has broken down because it had sprung from a wish dream.  The serious Christian, set down for the first time in a Christian community, is likely to bring with him a very definite idea of what Christian life together should be and try to realize it.  But God’s grace speedily shatters such dreams.  Just as surely God desires to lead us to a knowledge of genuine Christian fellowship, so surely must we be overwhelmed by a great general disillusionment with others, with Christians in general, and, if we are fortunate, with ourselves."