But to ensure that it is our hopes and not our fears that will be realized in this revolutionary age , we do need to build on marshall s core belief that the united states must remain a global power , and that our best security policy is one which prevents conflict 在這些轉捩點上,美國曾維系了國家的完整并廢除奴隸制度;實施婦女參政權;在詹森總統領導下,不分種族地賦予所有美國人基本的法定權利。在那每一個時刻里,我們反省自己的國家,并且有勇氣表示,這不是我國應有的樣子,我們可以做得更好。