World Peace Without Christ Crucified?

In light of the recent conversation that drifted in from BCV, I proffer three insightful sources:
God, Martin Luther and C.F.W. Walther:

"For we can do nothing against the truth, but for the truth."
II Corinthians 13:8

This is so great a good that no human heart can grasp it (therefore it necessitates such a great and hard fight). It must not be treated lightly, as the world maintains and many people who do not understand, saying we should not fight so hard about an article and trample on Christian love; rather, although we err on one small point, if we agree on everything else, we should give in and overlook the difference in order to preserve brotherly and Christian unity and fellowship. No, my dear man, do not recommend to me peace and unity when thereby God’s Word is lost, for then eternal life and everything else would be lost. In this matter there can be no yielding nor giving way, no, not for love of you or any other person, but everything must yield to the Word whether it be friend or foe. The Word was given unto us for eternal life and not to further outward peace and unity. The Word and doctrine will create Christian unity or fellowship. Where they reign all else will follow. where they are not no concord will ever abide. Therefore do not talk to me about love and friendship, if that means breaking with the Word, or the faith, for the gospel does not say love brings eternal life, God’s grace and all heavenly treasures, but the Word. -Martin Luther 1531: W.A. 34 II. 327

Many say, 'Instead of disputing over doctrine so much, we should much rather be concerned with souls and with leading them to Christ.' But all who speak in this way do not really know what they are saying or what they are doing. As foolish as it would be to scold a farmer for being concerned about sowing good seed and to demand of him simply to be concerned about a good harvest, so foolish it is to scold those who are concerned first and foremost with the doctrine, and to demand of them that they should rather seek to rescue souls. For just as the farmer who wants a good crop must first of all be concerned about good seed, so the church must above all be concerned about right doctrine if it would save souls. -- C.F. W. Walther, "Our Common Task: the Saving of Souls" 1872