为以下英语句子提供翻译。
"I have a dream that one day this nation will rise up and live out the true meaning of its creed: 'We hold these truths to be self-evident, that all men are created equal.'"
我有一个梦想，有一天这个国家会兴起来，并将其信条的真正含义付诸实践：“我们认为这些真理是不言自明的，所有人生来平等。”