"We will meet the challenge of real peace only by keeping in mind two fundamental truths. First, conflict is a natural state of affairs in the world. Some nations are certain to be unsatisfied by what they have and will try to get more, for a variety of reasons and through a variety of means. Other nations will resist the designs of these acquisitive powers. One way or another nations in such positions will come into conflict, and if they cannot resolve their conflicts peaceably they will eventually try to resolve them violently. Second, nations only resort to aggression when they believe they will profit from it. Conversely, they will shrink from aggression if it appears in the long run it will cost them more than it benefits them. Short of changing human nature, therefore, the only way to achieve a practical, liveable peace in a world of competing nations is to take the profit out of war."