A great man left a watchword that we can well repeat: "There is no indispensable man"
Franklin D. RooseveltPerfectionism, no less than isolationism or imperialism or power politics, may obstruct the paths to international peace. Let us not forget that the retreat to isolationism a quarter of a century ago was started not by a direct attack against international cooperation but against the alleged imperfections of the peace.
Franklin D. Roosevelt