帮我翻译这段英文文本。
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，有一天这个国家会站起来，并实现它信条的真正意义。我们认为这些真理是不言而喻的，即所有人生来平等。