对一段英文文本进行翻译，将其翻译成中文。
"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，有一天这个国家会振起并实现它的信条的真正意义：“我们认为这些真理是不言而喻的，人人生而平等。”