正如作家Robert Kagan在其著作修订版中总结的那样，欧洲源于金星而美国源于火星，但最终寻求合法政策及自我形象的美国离不开欧洲的支持。
As the writer Robert Kagan concluded in the revision of his book in which he declared Europeans to be from Venus and Americans from Mars, it turns out that Americans seeking democratic legitimization of their policies and self-images cannot escape Europe.