I think what the Nobel committee is doing is going beyond war and looking at what humanity can do to prevent war. Sustainable management of our natural resources will promote peace.
Nothing is more important in the preservation of peace than to secure among the great mass of the people living under constitutional government a just conception of the rights which their nation has against others and of the duties their nation owes to others.
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The limitation upon this mode of promoting peace lies in the fact that it consists in an appeal to the civilized side of man while war is the product of forces proceeding from man's original savage nature.