“我不是在谈盲目的乐观主义。以为如果我们不讨论失业它便会自动消失，相信只要我们无视医疗危机它就会自行解除，那是一厢情愿的无知。不，我在谈更根本的问题。我在谈奴隶们围坐在篝火旁唱颂自由的歌谣时的希望；我在谈移民背井离乡驶向遥远海岸时的希望；我在谈年轻的海军上尉勇敢地在湄公河三角洲巡逻时的希望；我在谈一个纺织工的儿子敢创敢拼时的希望；我在谈一个有着滑稽名字的、干瘦的小孩也相信美国也会有一片属于他的天地时的希望。希望就是勇气，希望就是力量！”
“I’m not talking about blind optimism here -- the almost willful ignorance that thinks unemployment will go away if we just don’t think about it, or the health care crisis will solve itself if we just ignore it. That’s not what I’m talking about. I’m talking about something more substantial. It’s the hope of slaves sitting around a fire singing freedom songs; the hope of immigrants setting out for distant shores; the hope of a young naval lieutenant bravely patrolling the Mekong Delta; the hope of a millworker’s son who dares to defy the odds; the hope of a skinny kid with a funny name who believes that America has a place for him, too. Hope -- Hope in the face of difficulty. Hope in the face of uncertainty. The audacity of hope!” Barack Obama (2004) 2004 Democratic National Convention Keynote Address “Audacity of Hope”