"Honesty is the best policy" of the utilitarian leads to the same results as the Gospel maxim "to deal justly with all men."
Also the growth of a world-wide commerce, with the accompanying spread of international law, develops constantly a spirit of international morality. A nation today, planning a war, must look beyond the question of how its course will affect the self-interest of other nations. If it has wisdom in its councils, it must also reckon with this spirit of international morality. If its cause be too palpably unjust, or the means it adopts to secure victory be too barbarous, it may shock this international morality, and bring upon itself unexpected enemies, who may balk its best laid plans. The possibility of such contingencies arising will have far more weight than any argument based on the teaching of Jesus.
THE NECESSITY OF COMPROMISE
In Physics a body acted on by two divergent forces takes a course which is the resultant of (a compromise between) the two different forces. So, if Christianity is to survive as an efficient force in man's evolution, compromises must be made between the ideals of Jesus and the natural forces expressed in the terms of the struggle for existence and the survival of the fittest. It is possible that the day may come, when all nations of our planet may be converted, to put into practical operation in international affairs the ideals of Jesus. But the experience of the world during 1914 shows that little, if any, progress has been made in that direction since the Crucifixion. Suppose the Christian nations of Europe and America should announce today the doctrine of non-resistance, dismantle their fleets and dismiss their armies, how long would it be before the Moslems, or the "yellow hordes" of Asia, would enslave them and exterminate all Christian religion and civilization? Fortunately, such a result is unthinkable, and the Christian nations will, until some unknown time in the future, continue their compromise with Jesus' ideals. The unspeakable Turk will continue to understand that, if he massacres some Christian villages, the other cheek will not be turned to him, but, on the contrary, a righteous retribution of bayonet and shell will be meted out to him.
A superficial glance at history illustrates the necessity of national compromise.
If Moses had preached, and the Jews had put in practice, the doctrine of non-resistance, they would soon have been exterminated by their Philistine neighbors, and the Jesus that was would never have been.
If the tribes of the northern barbarians in the first thousand years of our era had put into practical effect the Sermon on the Mount, as soon as they accepted Christianity, there would have been no Anglo-Saxon England and United States, as they are today.
If Ferdinand and Isabella had not relied on their earthly weapons, Spain would probably have been Moslem to this day.
If the Christian powers had not warred against the Turks in the sixteenth century, the greater part of Europe would have bowed the knee to Mahomet, and the Mosque would have superseded the Church as the authorized place of worship.