The lack of objectivity, as far as foreign nations are concerned, is notorious. From one day to another, another nation is made out to be utterly depraved and fiendish, while ones own nation stands for everything that is good and noble. Every action of the enemy is judged by one standardevery action of oneself by another. Even good deeds by the enemy are considered a sign of particular devilishness, meant to deceive us and the world, while our bad deeds are necessary and justified by our noble goals which they serve.
The moral duty to be expected in different ages is not a unity of standard, or of acts, but a unity of tendency. At one time the benevolent affections embrace merely the family, soon the circle expanding includes first a class, then a nation, then a coalition of nations, then all humanity and finally, its influence is felt in the dealings of man with the animal world.
Courage is not limited to the battlefield or the Indianapolis 500 or bravely catching a thief in your house. The real tests of courage are much quieter. They are the inner tests, like remaining faithful when nobody's looking, like enduring pain when the room is empty, like standing alone when you're misunderstood.