The Unity Of The Church

"Homesickness for the [One True Church]" is genuine and legitimate only in so far as it is a disquietude at the fact that we have lost and forgotten Christ, and with Him have lost the unity of the Church. Thus we must be on our guard, all along the line, lest the motives which stir us today lead us to a quest that looks past Him. Indeed, however rightful and urgent those motives are, we could well leave them out of our reckoning. We shall do well to realize that in themselves they are well-meaning but merely human desires, and that we can have no final certainty that they are rightful, no unanswerable claim for their fulfillment. Unless we regard them with a measure of holy indifference, we are ill placed for a quest after the unity of the Church.

- Karl Barth in "The Church and the Churches"